If you make a cuboid frame with a length of 10 cm, a width of 6 cm, and a height of 5 cm, how many centimeters of iron wire are needed at least?
如果做一个长10厘米，宽6厘米，高5厘米的长方体框架，至少需要铁丝多少厘米？
<gadget id="calculator">10 + 6 + 5</gadget>
<output>21</output>

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

<result>84</result>