The sum of the sides of a cube is 84cm, what is its volume in cm**3?
一个正方体的棱长之和是84cm，它的体积是多少cm**3？
<gadget id="calculator">84 / 12</gadget>
<output>7</output>

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

<result>343</result>