A train departs from city A at 8:00 and arrives at city B at 15:00, traveling an average of 140 kilometers per hour. How many kilometers is the distance between cities A and B?
一列火车8时从A城开出，15时到达B城，平均每小时行140千米，A、B两城市相距多少千米？
<gadget id="calculator">140 * 7</gadget>
<output>980</output>

<result>980</result>