title: iOS DDMathParser Get Any Occurrences of (...) In String
body: <p>I am using <code>DDMathParser</code> in my app, and have recently come across the need to get occurrences of any group of numbers within a () parentheses bracket thingy (very highly technical!). For example, I would need to get <strong><code>(6+5)</code></strong> out of <strong><code>6+7/8(6+5)</code></strong>. Specifically, I would like to be able to do this so that I can make <code>(56+9)sqrt</code> compile just as well as <code>sqrt(56+9)</code>. Any help?</p>
  
  <p><em>P.S. I know that the maker of DDMathParser is often sighted in this neck of the woods. I am secretly hoping that he will come to the rescue and either fix my problem so I can implement it myself or him make it part of DDMathParser! :)</em>  </p>