diff --git a/README.md b/README.md
index 6fc45a7..59dc905 100644
--- a/README.md
+++ b/README.md
@@ -1685,14 +1685,14 @@ import os
 <str> = os.popen('<shell_command>').read()
 ```
 
-#### Sends '1 + 1' to a calculator and captures its output:
+#### Sends '1 + 1' to the calculator and captures its output:
 ```python
 >>> from subprocess import run
 >>> run('bc', input='1 + 1\n', capture_output=True, encoding='utf-8')
 CompletedProcess(args='bc', returncode=0, stdout='2\n', stderr='')
 ```
 
-#### Sends 'test.in' to a calculator running in standard mode and saves its output to 'test.out':
+#### Sends 'test.in' to the calculator running in standard mode and saves its output to 'test.out':
 ```python
 >>> from shlex import split
 >>> os.popen('echo 1 + 1 > test.in')
diff --git a/index.html b/index.html
index 997e5b0..a8019cc 100644
--- a/index.html
+++ b/index.html
@@ -1528,12 +1528,12 @@ shutil.rmtree(&lt;path&gt;)               <span class="hljs-comment"># Deletes t
 &lt;str&gt; = os.popen(<span class="hljs-string">'&lt;shell_command&gt;'</span>).read()
 </code></pre></div>
 
-<div><h4 id="sends11toacalculatorandcapturesitsoutput">Sends '1 + 1' to a calculator and captures its output:</h4><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> subprocess <span class="hljs-keyword">import</span> run
+<div><h4 id="sends11tothecalculatorandcapturesitsoutput">Sends '1 + 1' to the calculator and captures its output:</h4><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> subprocess <span class="hljs-keyword">import</span> run
 <span class="hljs-meta">&gt;&gt;&gt; </span>run(<span class="hljs-string">'bc'</span>, input=<span class="hljs-string">'1 + 1\n'</span>, capture_output=<span class="hljs-keyword">True</span>, encoding=<span class="hljs-string">'utf-8'</span>)
 CompletedProcess(args=<span class="hljs-string">'bc'</span>, returncode=<span class="hljs-number">0</span>, stdout=<span class="hljs-string">'2\n'</span>, stderr=<span class="hljs-string">''</span>)
 </code></pre></div>
 
-<div><h4 id="sendstestintoacalculatorrunninginstandardmodeandsavesitsoutputtotestout">Sends 'test.in' to a calculator running in standard mode and saves its output to 'test.out':</h4><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> shlex <span class="hljs-keyword">import</span> split
+<div><h4 id="sendstestintothecalculatorrunninginstandardmodeandsavesitsoutputtotestout">Sends 'test.in' to the calculator running in standard mode and saves its output to 'test.out':</h4><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> shlex <span class="hljs-keyword">import</span> split
 <span class="hljs-meta">&gt;&gt;&gt; </span>os.popen(<span class="hljs-string">'echo 1 + 1 &gt; test.in'</span>)
 <span class="hljs-meta">&gt;&gt;&gt; </span>run(split(<span class="hljs-string">'bc -s'</span>), stdin=open(<span class="hljs-string">'test.in'</span>), stdout=open(<span class="hljs-string">'test.out'</span>, <span class="hljs-string">'w'</span>))
 CompletedProcess(args=[<span class="hljs-string">'bc'</span>, <span class="hljs-string">'-s'</span>], returncode=<span class="hljs-number">0</span>)