title: Regex remove pattern from match
body: <p>Tried to find answer but didn't make it.</p>
  
  <p>So, let's say I have a string</p>
  
  <pre><code>12/01/2014 22:13 1,600/1,800 *or*
  12/01/2014 22:13 100/200 *or*
  12/01/2014 22:13 1,600/1,800 A *or*
  12/01/2014 22:13 1600/1800 A
  </code></pre>
  
  <p>I need to get /1,800 or /200 or /1,800 or /1800</p>
  
  <pre><code>/(\d{1,3},)*\d+.?(\d{1,8}|)
  </code></pre>
  
  <p>this gives me 2 matches: ex. /1,800 and /01/2014</p>
  
  <p>I have found pattern to exclude dates:</p>
  
  <pre><code>(?!(0?[1-9]|1[012])([-/.])(0?[1-9]|[12][0-9]|3[01])([-/.])(19|20)\d\d)
  </code></pre>
  
  <p>but I don't know how to combine these two.</p>