The length of a rectangle is 8 cm and the width is 6 cm. How many centimeters of iron wire is required to enclose this rectangle?
一个长方形的长是8厘米，宽是6厘米，围成这个长方形至少要多少厘米长的铁丝．
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<result>28</result>