The distance between Beijing and Ningbo is 1120 kilometers. A train departs from Beijing at 7:00 in the morning and arrives in Ningbo at 9:00 in the evening. How many kilometers does the train travel per hour?
从北京到宁波相距1120千米，一列火车于早上7：00从北京出发，当天晚上9：00到宁波，这列火车每小时行多少千米？
<gadget id="calculator">21 - 7</gadget>
<output>14</output>

<gadget id="calculator">1_120 / 14</gadget>
<output>80</output>

<result>80</result>