Uncle Zhang wants to use a wall to surround a rectangular chicken pen. If the chicken pen is 10 meters long and 8 meters wide, what is the minimum number of meters of plastic mesh needed to surround the chicken pen?
张大伯要利用一面墙围一个长方形鸡圈，如果这个鸡圈长10米，宽8米，围这个鸡圈最少需要多少米塑料网？
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">10 + 16</gadget>
<output>26</output>

<result>26</result>