After three identical cubes are assembled into a large cuboid, the surface area is reduced by 256 square centimeters. What is the volume of a cube?
三个相同的正方体拼成一个大的长方体后，表面积减少了256平方厘米，一个正方体的体积是多少？
<gadget id="calculator">8 * 8 * 8</gadget>
<output>512</output>

<result>512</result>