James orders an 8 piece pizza.  His friend eats 2 slices and James eats half of what is left.  How many slices does James eat?
There are 8-2=<T>subtract(8, 2)=6 slices left after his friend eats some slices
That means So he eats 6/2=<T>divide(6, 2)=3.0 slices
