diff --git a/docs/12_ko.html b/docs/12_ko.html
index e47e64e370dce15bd0a31c12a8567763c06e0d6c..77054351d5c089392971e225f43a8ea698955287 100644
--- a/docs/12_ko.html
+++ b/docs/12_ko.html
@@ -39,7 +39,9 @@
             <p>Rust는 숫자 변수 타입에 대해 알고 있어야하며, <code>u8</code>를 <code>u32</code>로 쉽게 사용할 수 없습니다.</p>
 <p>다행히 Rust는 <strong>as</strong> 키워드를 사용하여 숫자형을 쉽게 변환할 수 있습니다.</p>
 <p>또는 <code>parse</code>를 자주 사용합니다.</p>
-<pre><code class="rust">let my_string = "42"; let my_integer = my_string.parse::<i32>().unwrap(); // double colon op, ::<i32> syntax tells the compiler to parse the string as an i32 type</code></pre>
+<pre><code class="rust">let my_string = "42";
+let my_integer = my_string.parse::<i32>().unwrap();
+// double colon op, ::<i32> syntax tells the compiler to parse the string as an i32 type</code></pre>
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diff --git a/docs/15_ko.html b/docs/15_ko.html
index 2d12157bae04c106bbea0b2ce5a5afffac006f2f..0d2b49df971bf856062bca4bf050ecf7dad42ec7 100644
--- a/docs/15_ko.html
+++ b/docs/15_ko.html
@@ -42,20 +42,17 @@
 <p>함수 이름은 항상 <code>snake_case</code>로 지정됩니다.</p>
 <p>힌트: 함수를 정의하는 경우, 해당 함수가 수신하는 데이터를 매개변수 (parameter)라고합니다.<br />
 그 함수를 호출하고 데이터를 전달하면 인수(argument)라고합니다.</p>
-<pre><code class="python language-python">def add(x: int, y: int) -&gt; int:
-    return x + y
-
-def subtract(x: int, y: int) -&gt; int:
-    return x - y
-
-def main():
-    print(f"42 + 13 = {add(42, 13)}")
-    print(f"42 - 13 = {subtract(42, 13)}")
-
-
-if __name__ == "__main__":
-    main()
-</code></pre>
+<p>```python # 파이썬으로 보면<br />
+def add(x: int, y: int) -&gt; int:<br />
+    return x + y</p>
+<p>def subtract(x: int, y: int) -&gt; int:<br />
+    return x - y</p>
+<p>def main():<br />
+    print(f"42 + 13 = {add(42, 13)}")<br />
+    print(f"42 - 13 = {subtract(42, 13)}")</p>
+<p>if <strong>name</strong> == "<strong>main</strong>":<br />
+    main()<br />
+```</p>
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diff --git a/frontend/lessons/ko/chapter_1.yaml b/frontend/lessons/ko/chapter_1.yaml
index f9b111f1cb9ff47c5fd9405c4fbbceefd7c87618..2c378e1fa3c06e62c0da2d7652f4aeefc377ab7b 100644
--- a/frontend/lessons/ko/chapter_1.yaml
+++ b/frontend/lessons/ko/chapter_1.yaml
@@ -283,8 +283,11 @@
 
     %rust%
     let my_string = "42";
+
     let my_integer = my_string.parse::<i32>().unwrap();
+
     // double colon op, ::<i32> syntax tells the compiler to parse the string as an i32 type
+
     %end%
 - title: Constants
   code: >-
@@ -340,6 +343,7 @@
 
 
     ```python
+    # 파이썬으로 보면
 
     def add(x: int, y: int) -> int:
         return x + y