The distance between A and B is 360 kilometers. A train of freight cars and a train of passenger cars leave from places A and B at the same time. It is known that the speed of the passenger car is 50 kilometers per hour. How many hours will we meet after departure?
甲乙两地相距360千米，一列货车和一列客车从甲、乙两地同时相对开出，已知客车的速度是每小时50千米，货车的速度是客车的(3/5)，两车开出后几小时相遇？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">50 * (3/5)</gadget>
<output>30</output>

<gadget id="calculator">50 + 30</gadget>
<output>80</output>

<gadget id="calculator">360 / 80</gadget>
<output>9/2 = around 4.5</output>

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