Use an iron wire to turn a rectangular parallelepiped frame with a length of 15m, a width of 7m, and a height of 2m. If it is to be surrounded by a cube, the sum of the lengths of the sides remains the same. What is the surface area of the cube?
用一根铁丝转成一个长15m，宽7m，高2m的长方体框架，如果要把它改围成一个正方体，棱长总和不变，围成的正方体的表面积是多少？
<gadget id="calculator">15 + 7 + 2</gadget>
<output>24</output>

<gadget id="calculator">4 / 12</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">24 * (1/3)</gadget>
<output>8</output>

<gadget id="calculator">8 * 8 * 6</gadget>
<output>384</output>

<result>384</result>