A cuboid wood block is cut 5 cm to get a cube, the surface area is reduced by 120 cm2, find the volume of the original cuboid.
一个长方体木块截5厘米后得到一个正方体，表面积减少120平方厘米，求原长方体的体积．
<gadget id="calculator">120 / 4 / 5</gadget>
<output>6</output>

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

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

<result>396</result>