Tom eats a pound of carrots and twice as much broccoli.  If carrots have 51 calories per pound and broccoli has 1/3 that many calories, how many calories did he eat in total?
He ate 2 * 1 = <T>multiply(2, 1)=2 pounds of broccoli
There are 51 / 3 = <T>divide(51, 3)=17.0 calories in each pound of broccoli
So he ate 2 * 17 = <T>multiply(2, 17)=34 calories of broccoli
He ate 1 * 51 = <T>multiply(1, 51)=51 calories of carrots
So in total he ate 51 + 34 = <T>add(51, 34)=85 calories
