and B start from A at the same time, and run back and forth between A and B on the straight road. A is 72 meters per minute, and B is 48 meters per minute. A and B meet head-on for the second time and A catches up with B from behind for the second time. The distance between the two places is 80 meters, what is the distance between A and B?
甲、乙两人同时从A地出发，在直道A、B两地往返跑步，甲每分钟72米，乙每分钟48米，甲乙第二次迎面相遇与甲第二次从后面追上乙的两地相距80米，求A、B两地相距多少米？
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<result>200</result>