Zhang Xiaocheng ran 6 laps around the circular playground with a diameter of 20 meters. How many meters did he run in total?
张小成绕着直径是20米的圆形操场跑了6圈，他共跑了多少米？
<gadget id="calculator">3.14 * 20 * 6</gadget>
<output>376.8</output>

<result>376.8</result>