At 14:28 on May 12, 2008, a magnitude 8 earthquake occurred in Wenchuan, Sichuan, my country. For earthquake relief, Xi'an City selected two vehicles, A and B, loaded with relief supplies, to drive from Xi'an to Chengdu at the same time. It is known that the distance between the two cities is 842 kilometers. Car A travels 48 kilometers per hour, and car B travels 52 kilometers per hour. It took 1 hour to repair the car because it broke down on the way; 1 hour, and then immediately return along the original road, the two cars meet on the way. How much time did it take for the two cars to meet each other?
2008年5月12日14时28分，我国四川汶川发生了8级大地震，为了抗震救灾，西安市选派甲、乙两辆满载救灾物资的汽车同时由西安开往成都．已知两市相距842千米，甲车每小时行48千米，乙车每小时行52千米，甲车因途中车坏了，修车用了1小时；乙车到达成都后卸货用了1小时，然后立即沿原路返回，两车在途中相遇．两车从出发到相遇大约经过了多少时间？
<gadget id="calculator">48 + 52</gadget>
<output>100</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">842 * (1/50)</gadget>
<output>421/25 = around 16.84</output>

<gadget id="calculator">(421/25) + 1</gadget>
<output>446/25 = around 17.84</output>

<result>446/25 = around 17.84</result>