Two trains are traveling towards each other, train A travels 36 kilometers per hour, and train B travels 54 kilometers per hour. When two cars pass by the wrong way, a passenger in car A finds out that it takes 14 seconds from when the front of car B passes his window to when the rear of car B passes his window.
两列火车相向而行，甲车每小时行36千米，乙车每小时行54千米．两车错车时，甲车上一乘客发现：从乙车车头经过他的车窗时开始到乙车车尾经过他的车窗共用了14秒，求乙车的车长．
<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<gadget id="calculator">25 * 14</gadget>
<output>350</output>

<result>350</result>