cuboid (or cube) frame is surrounded by a 24cm long iron wire. Paste a layer of paper on the surface of this cuboid, how to use the most paper around it?
用一根长24cm的铁丝围成一个长方体(或正方体)框架．在这个长方体的表面糊一层纸，怎样围用纸最多？
<gadget id="calculator">24 / 12</gadget>
<output>2</output>

<gadget id="calculator">2 * 2 * 6</gadget>
<output>24</output>

<result>24</result>