There are two trains, one is 130 meters long and travels 23 meters per second. Another column is 250 meters long and travels 15 meters per second. Now the two cars are going towards each other, how many seconds will it take from meeting to leaving?
有两列火车，一列长130米，每秒行23米．另一列长250米，每秒行15米．现在两车相向而行，从相遇到离开需几秒钟？
<gadget id="calculator">130 + 250</gadget>
<output>380</output>

<gadget id="calculator">23 + 15</gadget>
<output>38</output>

<gadget id="calculator">380 / 38</gadget>
<output>10</output>

<result>10</result>