A train 200 meters long passes a 400-meter bridge at a speed of 5 meters per second. How long does it take from the front of the car entering the bridge to the end of the car leaving the bridge?
一列火车长200米，以每秒5米的速度通过一座400米的大桥．从车头进桥到车尾离桥一共需要多长时间？
<gadget id="calculator">200 + 400</gadget>
<output>600</output>

<gadget id="calculator">600 / 5</gadget>
<output>120</output>

<result>120</result>