question: Davos bought 2 shirts from the mall that cost $30 each. If he bought them with a 40% discount, how much did Davos pay for the 2 shirts?
answer: The total price of the 2 shirts is $30 x 2 = $<<30*2=60>>60.
  The total discount on the 2 shirts is $60 x 0.40 = $<<60*0.40=24>>24.
  Therefore, the total amount Davos paid for the 2 shirts is $60 - $24 = $<<60-24=36>>36.
  #### 36