How many square centimeters of wrapping paper is needed to pack 12 small cube cartons with wrapping paper into a cuboid? (When packing, use 12 square centimeters of wrapping paper for the overlapping part).
把12个棱长都是1厘米的小正方体纸盒用包装纸包装成长方体，至少需要多少平方厘米的包装纸？(包装时重叠部分用12平方厘米的包装纸)．
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">1 * 6</gadget>
<output>6</output>

<gadget id="calculator">2 + 6 + 6</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<gadget id="calculator">28 + 12</gadget>
<output>40</output>

<result>40</result>