Huanhuan and Lele practice running back and forth between points A and B on the playground. Huanhuan's speed is 8 meters per second, and Lele's speed is 5 meters per second. Two people start from point A at the same time and return after arriving at point B. It is known that the place where they meet for the second time is 5 meters away from the midpoint of AB. What is the distance between AB and AB?
欢欢和乐乐在操场上的A、B两点之间练习往返跑，欢欢的速度是每秒8米，乐乐的速度是每秒5米．两人同时从A点出发，到达B点后返回，已知他们第二次迎面相遇的地点距离AB的中点5米，AB之间的距离是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">6 / 13</gadget>
<output>6/13 = around 0.461538</output>

<gadget id="calculator">(1/2) - (6/13)</gadget>
<output>1/26 = around 0.038462</output>

<gadget id="calculator">5 / (1/26)</gadget>
<output>130</output>

<result>130</result>