The radius of a bicycle wheel is 40 cm, and the wheel rotates 100 times per minute. How many minutes does it take to pass a bridge with a length of 2512 meters? (π takes 3.14)
一辆自行车的车轮半径是40厘米，车轮每分钟转100圈，要通过长为2512米的桥，大约需要多少分钟．(π取3.14)
<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">2 * 3.14 * 40 * 1</gadget>
<output>251.2</output>

<gadget id="calculator">2_512 / 251.2</gadget>
<output>10</output>

<result>10</result>