The distance between the two stations is 585 kilometers. Cars A and B leave opposite each other at the same time. The speed of A car is 60 kilometers per hour, and the speed of B car is 70 kilometers per hour. So how many hours did the two cars meet after driving out?
两站相距585千米．甲、乙两车同时从两站相对开出，甲车的速度是每小时行60千米，乙车的速度是每小时行70千米．那么两车开出后几小时相遇？
<gadget id="calculator">60 + 70</gadget>
<output>130</output>

<gadget id="calculator">585 / 130</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>