John can play 200 beats per minute.  If he plays 2 hours a day for 3 days how many beats does he play?
He trains 2*60=<T>multiply(2, 60)=120 minutes a day
That means he played 200*120=<T>multiply(200, 120)=24000 beats per day
So he played 24000*3=<T>multiply(24000, 3)=72000 beats
