If a 1-meter-long cuboid is sawed into three pieces, and the surface area is increased by 12 square centimeters, what is the original volume of the cuboid?
把一根长1米的长方体木条锯成三段，表面积增加12平方厘米，这根长方体木条原来的体积是多少．
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 * 1 * 100</gadget>
<output>300</output>

<result>300</result>