A bridge is 2400 meters long. A train passes the bridge at a speed of 20 meters per second. The length of the train body is 200 meters. How many seconds does it take for the train to leave the bridge from the time it gets on the bridge?
一座桥长2400米，一列火车以每秒20米的速度通过这座桥，火车车身长200米，则火车从上桥到车尾巴离开桥需要多少秒．
<gadget id="calculator">200 + 2_400</gadget>
<output>2_600</output>

<gadget id="calculator">2_600 / 20</gadget>
<output>130</output>

<result>130</result>