The distance between A and B is 728 kilometers. A car starts at 9 am and arrives at B at 5 pm. How many kilometers per hour does the car travel on average?
甲乙两地相距728千米，一辆汽车从上午9时出发，下午5时到达乙地，这辆汽车平均每小时行多少千米？
<gadget id="calculator">728 / 8</gadget>
<output>91</output>

<result>91</result>