A departs from A to B for business, departs at 1:00 pm, and arrives at 7:00 pm on time. If he wants to leave at 2:00 pm and arrive on time at 7:00 pm, he must travel 2 kilometers more per hour. Find A and B The distance between the two places.
甲从A地出发去B地办事情，下午1点出发，晚上7点准时到达，如果他想下午2点出发，晚上7点准时到达，每小时就必须多行2千米，求A、B两地之间的距离．
<gadget id="calculator">7 - 2</gadget>
<output>5</output>

<gadget id="calculator">5 * 2 * 6</gadget>
<output>60</output>

<result>60</result>