A train is 150 meters long and travels 19 meters per second. How many minutes does it take for the whole car to pass through the 420-meter bridge?
一列火车长150米，每秒行19米．全车通过420米的大桥，需要多少分钟．
<gadget id="calculator">150 + 420</gadget>
<output>570</output>

<gadget id="calculator">570 / 19 / 60</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>