A car departs at 9:30 in the morning and arrives at the destination at 8:30 in the evening, traveling a total of 660 kilometers. How many kilometers per hour does the car travel?
一辆汽车上午9：30出发，晚上8时30分到达目的地，共行驶660千米．这辆汽车每小时行驶多少千米？
<gadget id="calculator">660 / 11</gadget>
<output>60</output>

<result>60</result>