The math works, too, if you consider the volume of each DVD case (assuming standard dimensions other than the stated 14mm, i.e. 135 mm x 190 mm x 14 mm) is 0.0003591 m^3*, and 0.0003591 m^3 x 3000 units = 1.1 m^3, approximately. The extra 0.1 m^3 must be for the packing slip
*in case that's hard to visualize, convert each to meters, a-like so: 0.135 m x 0.190 m x 0.014 m = 0.0003591 m^3
p.s. it would be really entertaining if they shipped it as one extremely long single stack; that box would be the normal length and width of a DVD case, but be 42 meters (138 feet) long!
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