A cuboid block, cut 5 cm from its top, becomes a cube with a reduced surface area of 160 cm2. Find the volume of the original cuboid.
一个长方体木块，从上面截取5厘米后，成为一个正方体，其表面积减小了160平方厘米．求原长方体的体积．
<gadget id="calculator">160 / 4 / 5</gadget>
<output>8</output>

<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">8 * 8 * 13</gadget>
<output>832</output>

<result>832</result>