piece of iron wire with a length of 108 cm is made into a cuboid frame. The bottom surface is a rectangle with a length of 12 cm and a width of 6 cm. Find its surface area.
一条长108厘米的铁丝制作成一个长方体框架，底面是一个长12厘米，宽6厘米的长方形，求它的表面积．
<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<gadget id="calculator">108 / 4</gadget>
<output>27</output>

<gadget id="calculator">12 + 6</gadget>
<output>18</output>

<gadget id="calculator">27 - 18</gadget>
<output>9</output>

<gadget id="calculator">12 * 9</gadget>
<output>108</output>

<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<gadget id="calculator">72 + 108 + 54</gadget>
<output>234</output>

<gadget id="calculator">234 * 2</gadget>
<output>468</output>

<result>468</result>