Kim has 4 dozen shirts.  She lets her sister have 1/3 of them.  How many shirts does she have left?
She had 4*12=<T>multiply(4, 12)=48 shirts to start with
She gives away 48/3=<T>divide(48, 3)=16.0
So she has 48-16=<T>subtract(48, 16)=32 left
