A cuboid becomes a cube if its height is reduced by 2 cm, and its surface area is reduced by 72 cm2. What is the volume of the original cuboid in cubic centimeters?
一个长方体如高减少2厘米就成为正方体，表面积比原来减少72平方厘米．原长方体的体积是多少立方厘米？
<gadget id="calculator">72 / 4 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 + 2</gadget>
<output>11</output>

<gadget id="calculator">9 * 9 * 11</gadget>
<output>891</output>

<result>891</result>