title: Multiply value on input [type='number'] by 250
body: <p>I need to have an <code>input [type='number']</code>  multiplying its quantity by the value of 250.
  I want a situation similar of <a href="https://stackoverflow.com/questions/3707271/multiply-input-value-on-keyup">this one</a>... i tried to use the code on this link but since i am using <code>input [type='number']</code>, the values simply didn´t update!</p>
  
  <p>Does anyone know how to have this working with this kind of <code>input</code> with <code>Jquery</code>?</p>
  
  <p>Many Thanks in advance</p>