title: Using modulus in for loop
body: <p>I am trying to understand how to repeat loops using the mod operator.</p>
  
  <p>If you have two strings, <code>"abc"</code> and <code>"defgh"</code>, how can <code>%</code> be used to loop through <code>abc</code>, repeating it until the end of <code>defgh</code> is reached?  Namely, what is the mod relationship of the length of <code>abc</code> and <code>defgh</code>?</p>
  
  <p>I don't really understand this concept.</p>