Two trains A and B depart from two stations at the same time. Train A travels 48 kilometers per hour and train B travels 52 kilometers per hour. If when they meet, train A travels 20 kilometers less than train B. What is the distance between the stations?
甲乙两列火车分别从两个车站同时相向开出，甲车每小时行48千米，乙车每小时行52千米，如果相遇时，甲车一共比乙车少行20千米，那么两站之间的距离是多少？
<gadget id="calculator">52 - 48</gadget>
<output>4</output>

<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<gadget id="calculator">52 + 48</gadget>
<output>100</output>

<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<result>500</result>