An express train and a slow train are traveling towards each other. The length of the express train is 280 meters, and the length of the slow train is 385 meters. It takes 11 seconds for the person sitting in the fast train to see the slow train passing by, so how many seconds does it take for the person sitting in the slow train to see the fast train passing by?
一列快车和一列慢车相向而行，快车的车长是280米，慢车的车长是385米．坐在快车上的人看见慢车驶过的时间是11秒，那么坐在慢车上的人看见快车驶过的时间是多少秒．
<gadget id="calculator">385 / 11</gadget>
<output>35</output>

<gadget id="calculator">280 / 35</gadget>
<output>8</output>

<result>8</result>