Now there is a 150cm long iron wire, which is welded into a cube frame with 6cm of iron wire left, and the surrounding is sealed with cardboard. At least how many square centimeters of cardboard is needed?
现在有一根150cm长的铁丝，用这根铁丝焊成一个正方体的框架，还剩铁丝6cm，周围用纸板封好．至少需要多少平方厘米的纸板？
<gadget id="calculator">150 - 6</gadget>
<output>144</output>

<gadget id="calculator">144 / 12</gadget>
<output>12</output>

<gadget id="calculator">12 * 12 * 6</gadget>
<output>864</output>

<result>864</result>