James buys 3 shirts for $60.  There is a 40% off sale.  How much did he pay per shirt after the discount?
He got a 60*.4=$<T>multiply(60, 0.4)=24.0 discount
So he paid 60-24=$<T>subtract(60, 24)=36 for the shirts
That means he paid 36/3=$<T>divide(36, 3)=12.0 per shirt
