3 x 1.25 = 3.75 3.75 x 2 = 7.50 The volume of the big box is 7.5cubic feet A smaller box is 1/4 foot by 1/4 foot by 1/4 foot. 1/4 * 1/4 = 1/16. 1/16 * 1/4 = 1/64 64 small boxes can fit in a cubic foot. 7.5 * 64 = 480 480 small boxes can fit in the bigger box.