If the height of a cuboid is shortened by 5 cm, a cube remains. The surface area of this cube is 40 cm2 less than that of the original cuboid. What is the volume of the original cuboid?
一个长方体，如果高截短5厘米，就剩下一个正方体，这个正方体比原长方体表面积减少40平方厘米，原长方体体积是多少．
<gadget id="calculator">40 / 4 / 5</gadget>
<output>2</output>

<gadget id="calculator">2 + 5</gadget>
<output>7</output>

<gadget id="calculator">2 * 2 * 7</gadget>
<output>28</output>

<result>28</result>