Cars A and B leave opposite places at the same time from places A and B, and meet for the first time at a distance of 80 kilometers from place A. After the encounter, the two vehicles continue to move forward, and return immediately after reaching the destination. The second encounter is at a distance of 60 kilometers from B. Find the distance between A and B.
甲乙两车同时从A、B两地相对开出，第一次在离A地80千米处相遇．相遇后两车继续前进，到达目的地后又立即返回，第二次相遇在离B地60千米处．求A、B两地间的距离．
<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">240 - 60</gadget>
<output>180</output>

<result>180</result>