There is a rectangular flowerbed with a length of 42 meters and a width of 32 meters. Barbed wire is placed around the flowerbed. What is the length of the barbed wire in meters?
有一个长方形的花圃，长42米，宽32米，沿着花圃四周围上铁丝网，铁丝网的长度是多少米？
<gadget id="calculator">42 + 32</gadget>
<output>74</output>

<gadget id="calculator">2 * 74</gadget>
<output>148</output>

<result>148</result>