There are 48 crayons in the box.  Kiley takes 1/4 of them away.  Joe takes away half of the remaining crayons, how many crayons are left?
Kiley takes 48/4=<T>divide(48, 4)=12.0 crayons
48-12=<T>subtract(48, 12)=36 crayons remain
Joe takes 36/2=<T>divide(36, 2)=18.0 crayons
36-18=<T>subtract(36, 18)=18 crayons left
