The distance between A and B is 720 kilometers. A passenger car and a freight train depart from the two cities at the same time, and they meet after 5 hours. It is known that the speed of the truck is (3/5) that of the passenger car, how many kilometers does the passenger car travel on average per hour?
甲、乙两城相距720千米，一辆客车和一列货车同时从这两个城市相对开出，5小时后相遇．已知货车的速度是客车的(3/5)，客车平均每小时行多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">720 / 5 / (8/5)</gadget>
<output>90</output>

<result>90</result>