The outer diameter of a car tire is 1.2 meters. If the wheel rotates 400 times per minute, how many meters does the car travel per minute?
一辆汽车轮胎的外直径是1.2米，如果车轮每分钟转400周，这辆汽车每分钟行驶多少米？
<gadget id="calculator">3.14 * 1.2 * 400</gadget>
<output>1_507.2</output>

<result>1_507.2</result>