The total length of the Qingdao-Jinan expressway is 424 kilometers, and two cars, A and B, leave opposite directions at the same time. Car A travels 110 kilometers per hour, and car B travels 102 kilometers per hour. How long will it take for the two cars to meet each other?
青岛至济南高速公路全长424千米，甲乙两车分别从两地同时相向开出．甲车每小时行110千米，乙车每小时行102千米，两车几小时可以相遇？
<gadget id="calculator">110 + 102</gadget>
<output>212</output>

<gadget id="calculator">424 / 212</gadget>
<output>2</output>

<result>2</result>