The outer diameter of a bicycle tire is 0.7 meters. If it rotates 90 times per minute on average, how many minutes does it take to pass a 989.1 long bridge?
一辆自行车的轮胎的外直径是0.7米，如果平均每分转90周，通过一座989.1长的桥，需要几分钟？
<gadget id="calculator">3.14 * 0.7 * 90</gadget>
<output>197.82</output>

<gadget id="calculator">989.1 / 197.82</gadget>
<output>5</output>

<result>5</result>