The outer diameter of a pair of car wheels is 1.2m. How many minutes does it take to pass a 942m long bridge at a speed of 50 revolutions per minute?
一俩汽车车轮的外直径是1.2m，它以每分钟转动50圈的速度通过一个长942m的大桥，需要多少分钟？
<gadget id="calculator">3.14 * 1.2 * 50</gadget>
<output>188.4</output>

<gadget id="calculator">942 / 188.4</gadget>
<output>5</output>

<result>5</result>