On a map with a scale of 1:5,000,000, the distance between Shenyang and Chongqing is 6 cm. If two cars A and B start from opposite places at the same time, car A will travel 48 kilometers per hour, and car B will travel 42 kilometers per hour. How many hours will the two cars meet?
在比例尺是1：5000000的地图上，量得沈阳和重庆两地相距6厘米．如果甲、乙两辆汽车同时从两地相对出发，甲车每小时行48千米，乙车每小时行42千米．几小时后两车能相遇？
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">48 + 42</gadget>
<output>90</output>

<gadget id="calculator">6 / (1/5_000_000) / 100_000 / 90</gadget>
<output>10/3 = around 3.333333</output>

<result>10/3 = around 3.333333</result>