The outer diameter of a bicycle tire is about 72cm. If it rotates 100 times per minute on average, how many minutes does it take to pass a 452.16m long bridge?
一辆自行车轮胎的外直径约是72cm，如果平均每分钟转100周，它通过一座452.16m长的大桥，需要多少分钟．
<gadget id="calculator">3.14 * 0.72 * 100</gadget>
<output>226.08</output>

<gadget id="calculator">452.16 / 226.08</gadget>
<output>2</output>

<result>2</result>