Uncle Li, a professional chicken farmer, wants to build a new chicken house against the wall. This chicken house is 16 meters long and 8 meters wide. How to save materials? What is the circumference of the chicken coop?
养鸡专业户李大伯要靠墙新建一座鸡舍，这座鸡舍长16米，宽8米，怎样围节省材料？鸡舍的周长是多少米？
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">16 + 16</gadget>
<output>32</output>

<result>32</result>