Farmhouses use traditional stone mills as grain processing tools to attract tourists. A tourist pushes the mill along a circle with a radius of 1 meter, and pushes it 200 times. Approximately how many meters did you walk?
农家小院用传统的石磨作为粮食加工工具吸引游客．一位游客沿着半径是1米的圆周推磨，推了200圈．大约走了多少米？
<gadget id="calculator">2 * 3.14 * 1 * 200</gadget>
<output>1_256</output>

<result>1_256</result>