Melt three iron cubes with surface areas of 54, 96 and 150 square centimeters into a big cube (without loss), find the volume of the big cube.
将表面积分别为54、96和150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">3 ** 3</gadget>
<output>27</output>

<gadget id="calculator">4 ** 3</gadget>
<output>64</output>

<gadget id="calculator">5 ** 3</gadget>
<output>125</output>

<gadget id="calculator">27 + 64 + 125</gadget>
<output>216</output>

<result>216</result>