Kat decides she wants to start a boxing career.  She gets a gym membership and spends 1 hour in the gym 3 times a week doing strength training.  She also trained at the boxing gym 4 times a week for 1.5 hours.  How many hours a week does she train?
She strength trains 3*1=<T>multiply(3, 1)=3 hours a week
She does boxing training 4*1.5=<T>multiply(4, 1.5)=6.0 hours a week
So she trains a total of 3+6=<T>add(3, 6)=9 hours a week
