square lawn with a side length of 12.5 meters, Xiao Ming walked 4 times around the lawn, how many meters did he walk in total?
一块正方形草地，边长是12.5米，小明沿着草地四周走了4圈，他一共走了多少米？
<gadget id="calculator">12.5 * 4 * 4</gadget>
<output>200</output>

<result>200</result>