What's the volume of the sawn off part when sawing a cuboid 8 cm long, 3 cm wide and 3 cm high into the largest cube?

The side length of the largest cube is 3cm, and the volume is 3 × 3 × 3 = 27cm3
8 × 3 × 3-27 = 45 CC
The volume of the sawn part is 45 cubic centimeters

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