John plays paintball 3 times a month.  Each time he plays he buys 3 boxes of paintballs.  They cost $25 per box.  How much does he spend a month on paintballs?
He spends 3*25=$<T>multiply(3, 25)=75 each time he plays
So he spends 75*3=$<T>multiply(75, 3)=225
