title: Subtract two columns with text and numbers in excel vba
body: <p>I have two columns that contain information in the following format. </p>
  
  <pre><code>Column A - 35 days
  Column B - 29 days
  </code></pre>
  
  <p>How can i subtract the two columns to show just a number, like 35 days - 29 days = 6.</p>