Aunt Zhang planned to use plastic netting to surround a rectangular chicken ring against one wall. If the chicken pen is 5 meters long and 3 meters wide, how many meters of plastic nets are needed to enclose the chicken pen?
张大妈打算用塑料网靠一面墙围一个长方形鸡圈．如果这个鸡圈长5米，宽3米，围成这个鸡圈至少需要多少米长的塑料网？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<result>11</result>