I am not sure of the units you want so I will calculate the volume on both cubic feet and cubic yards.
Cubic feet is feet feet feet so the volume is
60 8 3 = 1440 cubic feet.
Cubic yards is yards yards yards so to find the volume in cubic yards you need to change all the dimensions to yards. There are 3 feet in a yard so the volume in cubic yards is
60/3 8/3 3/3 = 53.33 cubic yards.