Two cars start at the same time from places A and B, which are 1230 kilometers apart, and drive toward each other. Car A travels 49.8 kilometers per hour, and car B travels 52.7 kilometers per hour. After how many hours do they meet?
两辆汽车从相距1230千米的甲乙两地同时出发，相向而行，甲车每小时行49.8千米，乙车每小时行52.7千米，经过几小时相遇？
<gadget id="calculator">49.8 + 52.7</gadget>
<output>102.5</output>

<gadget id="calculator">1_230 / 102.5</gadget>
<output>12</output>

<result>12</result>