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