James scored 13 field goals worth 3 points and 20 shots worth two points.  How many total points did he score?
The field goals were worth 3*13=<T>multiply(3, 13)=39 points
The two-point shots were worth 2*20=<T>multiply(2, 20)=40 points
So the total score is 39+40=<T>add(39, 40)=79 points
