title: How do I list numbers from greatest to lowest?
body: <p>I have an assignment to take a number and to sort it in a ascending and descending order and then add it together to get a result. I know how to get the number sorted in a ascending order but not descending. For my code I have:</p>
  
  <pre><code>def addition(num):
      listedDes = list(str(num))
      listedDes.sort()
      print("".join(listedDes))
  addition(3524)
  </code></pre>