title: How Can I convert Exponential form back to a number?
body: <p>I am trying to convert exponential form to a number but I can't figure out how it has to be done.</p>
  
  <p>I have a number <code>1820674000000385406</code>.</p>
  
  <p>I am pasting this number excel after saving  this I am following these steps
  Format cells->Number and selecting the type.</p>
  
  <p>but after doing this I am not getting my original number I am getting the number as <code>1820674000000380000</code></p>
  
  <p>but I want my original number back. Please help me with this.</p>