Cubic feet are in the third dimension while square feet are in the second dimension so there isn't really any answer
There are 144 square inches in a square foot - so there are 72,000 in 500 square feet.
Coverting cubic feet into cubic inches first: 1 foot = 12 inches, therefore 1 cubic foot = 12 x 12 x 12 = 1 728 cubic inches 373 cubic feet therefore equal 1 728 x 373 = 644 544 cubic...
(522,720) x (2/3 foot) = 348,480 cubic feet = [12,906 and 2/3] cubic yards