If a 72 cm long iron wire is made into a cube frame and paper is pasted on its surface, how much paper should be used at least?
把一根72厘米长的铁丝做成一个正方体框架，并在它的表面糊纸，至少要用多少纸？
<gadget id="calculator">72 / 12</gadget>
<output>6</output>

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

<result>216</result>