title: How to Remove all text leave only numbers in Memo
body: <p>I need a button through the lines of the Same and look for letters, so deleting all the letters and leaving only the numbers</p>
  
  <p>example:</p>
  
  <pre><code>fakestackoverflow;466546511
  nulling;65496411
  </code></pre>
  
  <p>result:</p>
  
  <pre><code>;466546511
  ;65496411
  </code></pre>