Two trains are running towards each other, car A travels 16 meters per second, and car B travels 19 meters per second. When the two trains pass by each other, a passenger in car A sees car B passing through the window for 7 seconds, and asks how long the second car is rice?
两列火车相向而行，甲车每秒行16米，乙车每秒行19米，两车错车时，甲车上一乘客看见乙车从车窗经过用了7秒，问乙车长多少米？
<gadget id="calculator">16 + 19</gadget>
<output>35</output>

<gadget id="calculator">35 * 7</gadget>
<output>245</output>

<result>245</result>