Two cars leave the station in opposite directions at the same time. Car A travels 52.5 kilometers per hour, and car B travels 62.5 kilometers per hour. After 4 hours, how many kilometers are the distance between the two cars?
两辆汽车同时从车站向相反方向开出．甲车每小时行52.5千米，乙车每小时行62.5千米．经过4小时，两车相距多少千米？
<gadget id="calculator">52.5 + 62.5</gadget>
<output>115</output>

<gadget id="calculator">115 * 4</gadget>
<output>460</output>

<result>460</result>