There is a square vegetable field with a side length of 40 meters. There is a small road along it. Xiao Ming ran 3 laps along the small road. How many meters did he run?
一块正方形的菜地，边长是40米，沿它的四周有一条小路，小明沿小路跑了3圈，跑了多少米．
<gadget id="calculator">40 * 4 * 3</gadget>
<output>480</output>

<result>480</result>