The outer diameter of a car is 60 cm. If it makes 500 revolutions per minute, how many meters will the car travel in 3 minutes?
一辆汽车外直径是60厘米，如果每分转500圈，这辆汽车3分钟行驶多少米．
<gadget id="calculator">3 / 100_000</gadget>
<output>3/100_000 = around 0.00003</output>

<gadget id="calculator">3.14 * 60 * 500 * (3/100_000)</gadget>
<output>2.826</output>

<result>2.826</result>