and B start from A and B at the same time and run back and forth. A is 180 meters per minute and B is 240 meters per minute. If the distance between their 10th meeting point and 11th meeting point is 600 meters, Find the distance between A and B in meters?
甲、乙两人分别从A、B两地同时出发，往返跑步，甲每分180米，乙每分240米，如果他们的第10次相遇点与第11次相遇点的距离是600米，求A、B两地相距多少米？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">600 / (6/7)</gadget>
<output>700</output>

<result>700</result>