Steve has three boxes. Box A has dimensions that are 5cm by 2cm by 3cm. Box B has dimensions that are 2cm by 2cm by 6cm. Box C has dimensions that are 6cm by 3cm by 2cm. If Steve has candy boxes cubes that measure one cubic cm, how many cubes can Steve fit into each box Box A, Box B, and Box C? Show all of your mathematical thinking.