A train is 360 meters long and travels 18 meters per second. How many seconds does it take for the whole train to pass through a 90-meter-long bridge?
一列火车长360米，每秒行18米，全车通过一座长90米的大桥需多少秒．
<gadget id="calculator">360 + 90</gadget>
<output>450</output>

<gadget id="calculator">450 / 18</gadget>
<output>25</output>

<result>25</result>