A car departs from A at 22:30 and arrives at B at 7:30 the next morning. It is known that the distance from A to B is 540 kilometers, how many kilometers does this car travel on average per hour?
一辆汽车从22：30从甲地出发，第二天上午7：30到达乙地．已知甲地到乙地的路程为540千米，这辆汽车平均每小时行驶多少千米？
<gadget id="calculator">540 / 9</gadget>
<output>60</output>

<result>60</result>