title: Regex find numbers in specific position
body: <p>hi i have a string like this</p>
  
  <pre><code>track._Event('product', 'test');Product.lisen(1234, 21, 4343); return false;
  </code></pre>
  
  <p>i want to use some regular expression so i would end up with groups</p>
  
  <pre><code>pid = 1234
  p1 = 21
  p2 = 4343
  </code></pre>