How many minutes does it take for a bicycle wheel with an outer radius of 30 cm to travel 100 times per minute to pass a 376.8-meter-long bridge?
一辆自行车车轮外半径是30厘米，每分钟前进100周，经过一座长376.8米长的桥，需要多少分钟？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2 * 3.14 * (3/10) * 100</gadget>
<output>188.4</output>

<gadget id="calculator">376.8 / 188.4</gadget>
<output>2</output>

<result>2</result>