If you make a cuboid frame with a length of 10cm, a width of 6cm, and a height of 5cm, how many centimeters of iron wire are needed at least? (neglected at the interface)
如果做一个长为10cm，宽为6cm，高为5cm的长方体框架，至少需要铁丝多少厘米？(接口处忽略不计)
<gadget id="calculator">10 + 6 + 5</gadget>
<output>21</output>

<gadget id="calculator">21 * 4</gadget>
<output>84</output>

<result>84</result>