Two cars, A and B, drive from point A to point B at the same time. Car A travels 58 km per hour, and Car B travels 42 km per hour. Car A returns immediately after arriving at point B, and the two cars meet after 6 o'clock. What is the distance in km between A and B?
甲、乙两辆汽车同时从A地开往B地．甲车每时行58km，乙车每时行42km，甲车到达B地后立即返回，6时后两车相遇．A、B两地间的距离是多少km？
<gadget id="calculator">58 + 42</gadget>
<output>100</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">100 * 3</gadget>
<output>300</output>

<result>300</result>