title: How to find a Modulus of a very large number (without a calculator)?
body: <p>I was wandering if there was a trick here that I'm not aware.
  For example (large number):</p>
  
  <blockquote>
    <p>6612384^8</p>
  </blockquote>
  
  <p>How can I apply mod 10?</p>