The distance between A and B is 560 kilometers. A bus departs at 8 am and arrives at the destination at 3 pm. How many kilometers per hour does the bus travel on average?
甲乙两地相距560千米，一辆客车从上午8点出发，下午3点正好到达目的地，这辆客车平均每小时行多少千米？
<gadget id="calculator">560 / 7</gadget>
<output>80</output>

<result>80</result>