title: Changing text within a <Div>
body: <p>Have some issue with coding here. If there is no class assigned to the  tag, how can I change the content using a external script? I would like to change the addition operator.</p>
  
  <pre><code>&lt;tr&gt;
  &lt;td&gt;&lt;div id="number1"&gt;1&lt;/div&gt;&lt;/td&gt;
  &lt;td&gt;&lt;div&gt;+&lt;/div&gt;&lt;/td&gt;
  &lt;td&gt;&lt;div id="number2"&gt;2&lt;/div&gt;&lt;/td&gt;
  &lt;td&gt;&lt;div&gt;=&lt;/div&gt;&lt;/td&gt;
  &lt;td&gt;&lt;input type="text"&gt;&lt;/input&gt;&lt;/td&gt;
  &lt;td&gt;&lt;input type="button" value="Check"&gt;&lt;/input&gt;&lt;/td&gt;
  </code></pre>
  
  <p></p>
  
  <p>Thank you</p>