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The answer is 32. First you would put all your measurements into inches so it’s easy to work with. Then find the volume of the crate by doing 12*24*24 this give you 6912 cubed as the volume. Then you would have to figure out the volume of the cube to find out how much space it takes up. The volume of the cube would be 6^3 and it would get you 216. Then you would divide 6912 by 216 which gives you 32. Hope this helps :)