Put three identical cubes together to form a cuboid, the sum of the lengths of the sides is 120cm, find the volume of the cuboid.
把三个同样的正方体拼成一个长方体，棱长总和是120cm，求长方体的体积．
<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">36 - 16</gadget>
<output>20</output>

<gadget id="calculator">120 / 20</gadget>
<output>6</output>

<gadget id="calculator">6 * 6 * 6 * 3</gadget>
<output>648</output>

<result>648</result>