13. A small toy box has dimensions 5 cm x 5 cm x 6 cm. Toy boxes are packed into a carton of dimension 20 cm x 15 cm x 30 cm. Calculate the number of such toy boxes that will fill the carton completely. Carton 20 cm 30 cm 15 cm Box 5 cm 6 cm 5 cm Diagram not drawn to scale​