A cuboid becomes a cube if its height is increased by 2 cm. At this time, the surface area increases by 72cm_ compared to the original one. What is the volume of the original cuboid in cm_?
一个长方体，如果高增加2cm，就成为一个正方体．这时表面积比原来增加72cm_，原来长方体的体积是多少cm_．
<gadget id="calculator">72 / 2</gadget>
<output>36</output>

<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">9 - 2</gadget>
<output>7</output>

<gadget id="calculator">9 * 9 * 7</gadget>
<output>567</output>

<result>567</result>