A bridge is 396 meters long, and a 72-meter-long train passes the bridge at a speed of 18 meters per second. How many seconds does it take from the front of the train to the bridge to the rear of the train leaving the bridge?
一座大桥长396米，一列长72米得火车以每秒18米得速度通过这座大桥，从车头上桥到车尾离开桥一共需要多少秒．
<gadget id="calculator">396 + 72</gadget>
<output>468</output>

<gadget id="calculator">468 / 18</gadget>
<output>26</output>

<result>26</result>