Cars A and B are traveling towards each other from places A and B at the same time. The speed of car A is 80 km/h, and the speed of car B is 60 km/h. When the two cars meet, A travels 280 kilometers more than B m, how many hours did A and B drive when they met?
甲、乙两车同时从A，B两地相向而行，甲车的速度是80千米/时，乙车的速度是60千米/时，两车相遇时甲比乙多行驶了280千米，相遇时甲乙行驶了多少小时？
<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<gadget id="calculator">280 / 20</gadget>
<output>14</output>

<result>14</result>