Marcus has three times as many cheese crackers as Mona.  Nicholas has 6 more crackers than Mona.  If Marcus has 27 crackers, how many crackers does Nicholas have?
Mona has 27 / 3 = <T>divide(27, 3)=9.0 cheese crackers.
Nicholas has 9 + 6 = <T>add(9, 6)=15 cheese crackers.
