If the height of a cube is increased by 2 cm, the surface area of the new cube is 56 cm2 larger than that of the original cube. Find the volume of the original cube.
一个正方体的高增加2厘米，得到的新长方体表面积比原正方体表面积增加了56平方厘米，求原正方体的体积．
<gadget id="calculator">56 / 4 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 * 7 * 7</gadget>
<output>343</output>

<result>343</result>