A cuboid wooden block, cut off a cuboid with a height of 5 cm from the upper part, the remaining part is a cube, and the surface area is reduced by 120 square centimeters. So, what is the volume of the original cuboid in cubic centimeters?
一个长方体木块，从上部截去高5厘米的长方体，剩下的部分是正方体，表面积减少了120平方厘米．那么，原来长方体的体积是多少立方厘米．
<gadget id="calculator">120 / 4 / 5</gadget>
<output>6</output>

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">6 * 6 * 11</gadget>
<output>396</output>

<result>396</result>