If a cuboid is cut off to a height of 2cm, its surface area will be reduced by 24cm**2, and the remaining part is exactly a cube. Find the volume of the original cuboid.
一个长方体，切去2cm高，它的表面积就减少24cm**2，剩下的部分恰好是一个正方体，求原来这个长方体的体积．
<gadget id="calculator">24 / 4 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 * 3 * 5</gadget>
<output>45</output>

<result>45</result>