The distance between the two places is 480 kilometers. Two cars, A and B, start from the two places at the same time and drive toward each other. Car A travels 70 kilometers per hour, and car B travels 80 kilometers per hour. How many hours later will the two cars meet?
两地相距480千米，甲乙两辆汽车同时从两地出发相向而行，甲车每小时行70千米，乙车每小时行80千米，两车几小时后相遇？
<gadget id="calculator">70 + 80</gadget>
<output>150</output>

<gadget id="calculator">480 / 150</gadget>
<output>16/5 = around 3.2</output>

<result>16/5 = around 3.2</result>