title: regular expression to find the first occurance of a number from a given keyword
body: <p>I have a string</p>
  
  <blockquote>
    <p>"ZTFN00 identification number is 89320394 and mobile number is +918017828848"</p>
  </blockquote>
  
  <p>and I want to identify the first occurrence of a number (<strong>89320394</strong> in this case) from the keyword ZTFN. Also, the expression shall not return 00 with the ZTFN and only return the first occurrence of the number.</p>
  
  <p>I tried <code>\d+(?!ZTFN00)</code> but it does not work !!</p>
  
  <p>Please suggest</p>