Weld an iron wire into a cuboid frame with a length of 8 cm, a width of 6 cm, and a height of 4 cm. What is the minimum length of iron wire needed?
把一根铁丝焊成一个长8厘米、宽6厘米、高4厘米的长方体框架，至少需要多少厘米长的铁丝．
<gadget id="calculator">8 + 6 + 4</gadget>
<output>18</output>

<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<result>72</result>