To weld a cuboid frame with a length of 5 cm, a width of 2 cm, and a height of 1 cm, at least how many cm of iron wire should be used.
焊接一个长5cm、宽2cm、高1cm的长方体框架，至少要用多少cm的铁丝．
<gadget id="calculator">5 + 2 + 1</gadget>
<output>8</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>