diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab.ts b/M01_MasterData/M01_MasterData_UI_LogicLab.ts
index e718224b..236bc196 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab.ts
@@ -23,6 +23,7 @@ import {
   fetchLogicSubs,
   saveFiles,
   type CalcLine,
+  type TextAnswer,
   type ElementBrief,
   type LogicRow,
   type LogicSummary,
@@ -52,6 +53,7 @@ interface Opened extends Draft {
   prices: Record<string, ElementBrief | null>;
   reasons: string[];
   lines: CalcLine[] | null;
+  text: TextAnswer | null;
   values: Record<string, string>;
 }
 
@@ -151,6 +153,9 @@ export async function mountM01LogicLab(
       row: current.row as LogicRow,
       dirty: () => current.id in drafts,
       values: current.values,
+      onText: (text) => {
+        current.text = text;
+      },
       onLines: (lines) => {
         current.lines = lines;
         drawEditor();
@@ -178,6 +183,7 @@ export async function mountM01LogicLab(
       reasons: current.reasons,
       prices: current.prices,
       lines: current.lines,
+      text: current.text,
       values: current.values,
       onChange: touch,
       calcHost: calc,
@@ -194,7 +200,16 @@ export async function mountM01LogicLab(
   const open = async (id: string, sub: string, key: string): Promise<void> => {
     const draft = drafts[id];
     if (draft?.origKey === null) {
-      show({ ...draft, id, original: null, prices: {}, reasons: [], lines: null, values: {} });
+      show({
+        ...draft,
+        id,
+        original: null,
+        prices: {},
+        reasons: [],
+        lines: null,
+        text: null,
+        values: {},
+      });
       return;
     }
     try {
@@ -210,6 +225,7 @@ export async function mountM01LogicLab(
         prices: one.prices,
         reasons: one.reasons,
         lines: null,
+        text: null,
         values: {},
       });
     } catch (error) {
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts
index 6ac05a13..ff323a85 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts
@@ -13,6 +13,7 @@ import type {
   HoLine,
   LogicRow,
   NamedFormula,
+  TextAnswer,
 } from "./M01_MasterData_UI_Logic_Api";
 import { formatNumber, qtyKind } from "./M01_MasterData_UI_Logic_Edit";
 import { tx } from "./M01_MasterData_UI_Logic_Text";
@@ -28,6 +29,8 @@ export interface DetailContext {
   prices: Record<string, ElementBrief | null>;
   /** 마지막 시험 계산의 줄 — 호표 차례 뒤에 덧줄 */
   lines: CalcLine[] | null;
+  /** 마지막 시험 계산의 읽는 식 줄(서버가 줌) */
+  text: TextAnswer | null;
   values: Record<string, string>;
   onChange: () => void;
   /** 시험 계산 칸(`buildCalc` 가 채움) — 넷째 컨테이너 안에 놓음 */
@@ -280,7 +283,7 @@ function hoBox(ctx: DetailContext): HTMLElement {
 /** 상세 화면 넷을 `host` 에 쌓음 */
 export function buildLabDetail(host: HTMLElement, ctx: DetailContext): void {
   const formula = el("div", { className: "m01lab__formula" });
-  buildFormula(formula, { row: ctx.row, lines: ctx.lines });
+  buildFormula(formula, { text: ctx.text });
   host.replaceChildren(
     infoBox(ctx),
     hoBox(ctx),
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Formula.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Formula.ts
index 80630f74..12b14727 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Formula.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Formula.ts
@@ -1,19 +1,60 @@
 /* =============================================================================
  * M01_MasterData_UI_LogicLab_Formula.ts
- * 「텍스트 수식」 컨테이너 자리 — 비목 묶음별 `이름 : 단가 * 수량식 = 금액` 줄은 여기서 채움(PLAN 3-2)
+ * 「텍스트 수식」 컨테이너 — 서버(`POST /text`)가 준 줄을 그대로 찍음(화면에서 다시 계산하지 않음)
+ * 비목 묶음 제목 · 줄(`이름 : 글`) · 소계 · 끝수 한 마디 · 까닭 있는 줄은 옅게
  * ========================================================================== */
 
 import { el } from "@ui/ui_template_elements";
-import type { CalcLine, LogicRow } from "./M01_MasterData_UI_Logic_Api";
+import type { TextAnswer } from "./M01_MasterData_UI_Logic_Api";
+import { formatNumber } from "./M01_MasterData_UI_Logic_Edit";
+import { tx } from "./M01_MasterData_UI_Logic_Text";
 import { tl } from "./M01_MasterData_UI_LogicLab_Text";
 
 export interface FormulaContext {
-  row: LogicRow;
-  /** 마지막 시험 계산의 줄 — 호표 차례 뒤에 덧줄 */
-  lines: CalcLine[] | null;
+  text: TextAnswer | null;
 }
 
-/** 자리만 — 줄을 채우는 일감이 `host` 안에 그림 */
-export function buildFormula(host: HTMLElement, _ctx: FormulaContext): void {
-  host.replaceChildren(el("p", { className: "m01-logic__muted", text: tl("Formula_Slot") }));
+const muted = (text: string): HTMLElement => el("p", { className: "m01-logic__muted", text });
+
+export function buildFormula(host: HTMLElement, ctx: FormulaContext): void {
+  const text = ctx.text;
+  if (!text) {
+    host.replaceChildren(muted(tl("Formula_Slot")));
+    return;
+  }
+  if (!text.ok) {
+    host.replaceChildren(
+      el("div", {
+        className: "m01-logic__reasons",
+        children: [el("strong", { text: tx("Calc_Stopped") }), el("div", { text: text.reason })],
+      }),
+    );
+    return;
+  }
+  const blocks = text.groups.flatMap((g) => [
+    el("h4", { className: "m01lab__group", text: g.비목 }),
+    ...g.줄.map((line) =>
+      el("div", {
+        className: `m01lab__text${line.까닭 ? " m01lab__text--off" : ""}`,
+        attrs: { "data-text-line": line.이름 },
+        children: [
+          el("div", { text: `${line.이름} : ${line.글}` }),
+          ...(line.까닭 ? [el("div", { className: "m01-logic__muted", text: line.까닭 })] : []),
+        ],
+      }),
+    ),
+    el("p", {
+      className: "m01lab__subtotal-text",
+      attrs: { "data-text-sub": String(g.소계) },
+      text: `${g.비목} ${tl("Subtotal")} ${formatNumber(g.소계)}${g.끝수 ? ` (${g.끝수})` : ""}`,
+    }),
+  ]);
+  blocks.push(
+    el("p", {
+      className: "m01lab__total",
+      attrs: { "data-text-sum": String(text.계) },
+      text: `${tl("Total")} ${formatNumber(text.계)}`,
+    }),
+  );
+  host.replaceChildren(...blocks);
 }
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Style.css b/M01_MasterData/M01_MasterData_UI_LogicLab_Style.css
index cd64ea84..e5bdfcda 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Style.css
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Style.css
@@ -92,3 +92,20 @@
 .m01lab__calc > h3 {
   display: none;
 }
+
+.m01lab__text {
+  font-family: var(--font-mono, monospace);
+  font-size: var(--text-body-sm);
+  word-break: break-all;
+  padding: var(--spacing-4) 0;
+}
+
+.m01lab__text--off {
+  opacity: 0.55;
+}
+
+.m01lab__subtotal-text {
+  margin: var(--spacing-4) 0;
+  font-weight: 600;
+  text-align: right;
+}
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Text.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Text.ts
index 7cf6c637..7c1ffbf3 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Text.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Text.ts
@@ -13,7 +13,7 @@ const TEXT = {
   ],
   Ho_Title: ["일위대가 호표", "Unit-cost table"],
   Formula_Title: ["텍스트 수식", "Text formula"],
-  Formula_Slot: ["(준비 중)", "(coming)"],
+  Formula_Slot: ["시험 계산을 누르면 식이 글로 나옴", "Run the trial calc to see the formula"],
   Calc_Title: ["시험 계산", "Trial calculation"],
   G_labor: ["인력", "Labor"],
   G_material: ["자재", "Material"],
diff --git a/M01_MasterData/M01_MasterData_UI_Logic_Api.ts b/M01_MasterData/M01_MasterData_UI_Logic_Api.ts
index 8d4d8356..f2c06d1e 100644
--- a/M01_MasterData/M01_MasterData_UI_Logic_Api.ts
+++ b/M01_MasterData/M01_MasterData_UI_Logic_Api.ts
@@ -97,6 +97,21 @@ export type CalcAnswer =
     }
   | { ok: false; reason: string };
 
+export interface TextLine {
+  이름: string;
+  글: string;
+  금액: number;
+  까닭?: string;
+}
+/** `POST /text` 답 — 서버가 만든 읽는 식 줄(화면은 그대로 찍음) */
+export type TextAnswer =
+  | {
+      ok: true;
+      groups: { 비목: string; 줄: TextLine[]; 소계: number; 끝수: string }[];
+      계: number;
+    }
+  | { ok: false; reason: string };
+
 export interface SubBrief {
   name: string;
   book: string | null;
@@ -183,6 +198,13 @@ export const runCalc = (body: {
   file?: string;
 }): Promise<CalcAnswer> => request("/calc", body);
 
+export const runText = (body: {
+  key: string;
+  inputs: Record<string, unknown>;
+  row?: LogicRow;
+  file?: string;
+}): Promise<TextAnswer> => request("/text", body);
+
 export const saveFiles = (
   files: SaveFile[],
 ): Promise<{ files: { file: string; version: string }[] }> => request("/save", { files });
diff --git a/M01_MasterData/M01_MasterData_UI_Logic_Calc.ts b/M01_MasterData/M01_MasterData_UI_Logic_Calc.ts
index e8043168..e01d490f 100644
--- a/M01_MasterData/M01_MasterData_UI_Logic_Calc.ts
+++ b/M01_MasterData/M01_MasterData_UI_Logic_Calc.ts
@@ -7,8 +7,10 @@
 import { createButton, createSelectField, el, showToast } from "@ui/ui_template_elements";
 import {
   runCalc,
+  runText,
   type CalcAnswer,
   type CalcLine,
+  type TextAnswer,
   type LogicRow,
 } from "./M01_MasterData_UI_Logic_Api";
 import { formatNumber } from "./M01_MasterData_UI_Logic_Edit";
@@ -23,6 +25,8 @@ export interface CalcContext {
   /** 로직마다 넣은 값 — 다시 그려도 남음 */
   values: Record<string, string>;
   onLines: (lines: CalcLine[] | null) => void;
+  /** 읽는 식 줄(`/text`)도 같이 받고 싶을 때 — 호출이 `onLines` 보다 먼저 */
+  onText?: (answer: TextAnswer) => void;
 }
 
 const SUMS = ["노무비", "재료비", "경비", "계"];
@@ -68,11 +72,13 @@ export function buildCalc(host: HTMLElement, ctx: CalcContext): void {
     }
     const draft = ctx.dirty() || ctx.savedKey === null;
     try {
-      const answer = await runCalc({
+      const body = {
         key: ctx.savedKey ?? ctx.row.키,
         inputs,
         ...(draft ? { row: ctx.row, file: ctx.file } : {}),
-      });
+      };
+      const answer = await runCalc(body);
+      if (ctx.onText) ctx.onText(await runText(body));
       ctx.onLines(answer.ok ? (answer.lines ?? null) : null);
       out.replaceChildren(...answerView(answer, draft));
     } catch (error) {