Obviously walked 2 times around a square flower bed, a total of 80 meters. What is the perimeter of this square flowerbed in meters.
明明围着一个正方形的花坛走了2圈，一共走了80米．这个正方形花坛的周长是多少米．
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<result>40</result>