A cuboid with a length of 5 meters is cut into 5 segments, and the surface area increases by 32 square meters. Find the volume of the original cuboid.
一个长5米的长方体，截成5段后，表面积增加了32平方米，求原长方体的体积．
<gadget id="calculator">32 / 8</gadget>
<output>4</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<result>20</result>