The length of the railway between the two cities is 600 kilometers. Two trains depart from the two places at the same time and travel towards each other. Car A travels 80 kilometers per hour, and the speed of car B is that of car A (7/8) , what hours do the two trains meet?
两个城市之间的铁路长600千米，两列火车火车分别从两地同时开出，相向而行，甲车每小时行80千米，乙车的速度是甲车的(7/8)，两列火车几小时相遇？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">80 * (7/8)</gadget>
<output>70</output>

<gadget id="calculator">80 + 70</gadget>
<output>150</output>

<gadget id="calculator">600 / 150</gadget>
<output>4</output>

<result>4</result>