At first find from the dimensions how many can fit for the storage pin
Since the dimensions of the storage bin are
L = 18 ft
W = 14 ft
H = 9 ft
Since the dimensions of the shoe original box are
l = 2 feet
w = 0.5 ft
h = 1.5 ft
Divide every 2 dimensions to find how many boxes can fit

Then the number of boxes is

He can fit 1512 boxes of shoe in his storage