Reese has been practicing piano for four hours every week. How many hours will he practice after five months?
If Reese practices 4 four hours every week, in a month, with four weeks, he would have practiced for 4*4 = <T>multiply(4, 4)=16 hours.
In five months, Reese would have practiced for 5*16 = <T>multiply(5, 16)=80 hours
