The outer diameter of a tire of a car is 0.8 meters, and how many revolutions does the wheel need to pass through a 314-meter-long bridge?
一辆汽车的轮胎外直径是0.8米，要经过314米长的桥，车轮要转动多少周？
<gadget id="calculator">3.14 * 0.8</gadget>
<output>2.512</output>

<gadget id="calculator">314 / 2.512</gadget>
<output>125</output>

<result>125</result>