A train departs from Jilin to Dalian at 12:30 am and arrives at Qingdao Airport at 7:30 pm. It is known that the distance from Jilin to Dalian is 651 kilometers. How many kilometers per hour does the train travel on average?
一列火车上午12：30从吉林开往大连，下午7：30到达青岛机场．已知吉林到大连的路程有651千米，问这列火车平均每小时行多少千米？
<gadget id="calculator">651 / 7</gadget>
<output>93</output>

<result>93</result>