title: How can I return only numbers and white space in Regular Expression?
body: <p>I would like to have a regular expression which returns only the numbers and the white space which I've inserted. i.e.</p>
  
  <pre><code>012 345 678 
  </code></pre>
  
  <p>or</p>
  
  <pre><code>012 345 678 910.
  </code></pre>
  
  <p>Any suggestion please?</p>