Using a piece of wire, just make a cuboid frame with a length of 7 cm, a width of 6 cm, and a height of 5 cm. Do you know how long this piece of wire is in centimeters?
用一段铁丝，正好做一个长7cm，宽6cm，高5cm的长方体框架．你知道这段铁丝长多少厘米吗？
<gadget id="calculator">7 + 6 + 5</gadget>
<output>18</output>

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

<result>72</result>