If the height of a cuboid is reduced by 3 cm, it becomes exactly a cube, and the surface area is reduced by 36 cm2. What is the volume of the original cuboid?
一个长方体如果高减少3厘米，正好成为一个正方体，表面积少36平方厘米，原长方体的体积是多少．
<gadget id="calculator">36 / 4 / 3</gadget>
<output>3</output>

<gadget id="calculator">3 + 3</gadget>
<output>6</output>

<gadget id="calculator">3 * 3 * 6</gadget>
<output>54</output>

<result>54</result>