title: javascript or jQuery function for interaction between input fields value
body: <p>I have a html form where people can enter number of purchase item. Default value of that text field is 1. </p>
  
  <pre><code>&lt;input type="text" size="5" value="1" id="position" class="amntstyle" name="position"&gt; 
  </code></pre>
  
  <p>I want another text input field for price where the value would be 15 times of position automatically.</p>
  
  <p>For example if someone enter 3 in position field, the price input field will get value 45 automatically. Like this </p>
  
  <pre><code>&lt;input type="text" size="5" value="45" id="price" class="amntstyle" name="price"&gt; 
  </code></pre>
  
  <p>Is it possible?</p>
  
  <p>Thanks a lot for your help.</p>