title: Round an answer to 2 decimal places in Python
body: <p>The issue i am having is my rounding my results to 2 decimal places. My app gets the right results, however, i am having difficulty making the app round to the nearest decimal as you would with currency</p>
  
  <pre><code>cost = input("\nEnter the 12 month cost of the Order: ")
  cost = float(cost)
  
  print("\n12 Month Cost:",
    cost * 1,"USD")
  print("6 Month Cost:",
    cost * 0.60,"USD")
  print("3 Month Cost:",
    cost * 0.36,"USD")
  </code></pre>
  
  <p>so for example if the 12 month price is $23, the 6 month price is 13.799999999999999 but i want it to show 13.80</p>
  
  <p>I've looked around google and how to round a number but couldn't find much help on rounding a result.</p>