If the height of a cube increases by 3 decimeters, it becomes a cuboid, and the surface area increases by 60 decimeters, what is the volume of the original cube?
一个正方体的高增加3分米，就变成了一个长方体，且表面积比原来增加了60平方分米，原来正方体的体积是多少立方分米．
<gadget id="calculator">60 / 3 / 4</gadget>
<output>5</output>

<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<result>125</result>