Melt three iron cubes with surface areas of 24 square centimeters, 54 square centimeters and 216 square centimeters into a big cube (excluding loss), find the volume of the big cube?
将表面积分别为24平方厘米，54平方厘米和216平方厘米的三个铁质正方体熔成一个大正方体(不计损耗)，求这个大正方体的体积？
<gadget id="calculator">2 ** 3</gadget>
<output>8</output>

<gadget id="calculator">3 ** 3</gadget>
<output>27</output>

<gadget id="calculator">6 ** 3</gadget>
<output>216</output>

<gadget id="calculator">8 + 27 + 216</gadget>
<output>251</output>

<result>251</result>