title: I want to Solve Below equation in java for button click event
body: <p>When I click on button the result display as Nan. And if I provide value of <code>T</code> directly for Example <code>T=15</code> than 15 will be print out.</p>
  
  <p>This is Formula.</p>
  
  <pre><code>T = (P*R)/ ((S*E)-(0.6)*P)
  </code></pre>
  
  <p>Where <code>P</code> , <code>R</code> , <code>S</code> is variable from Text Box.
  And <code>E</code> is variable from Drop Down Box.</p>