Two beetles, A and B, crawl from place A to place B at the same time. A climbs 1.5 meters per minute, and B climbs 0.9 meters per minute. After A arrives at B, he immediately returns to A and meets B at a distance of 3.6 meters from B. What is the distance between A and B?
甲、乙两只甲虫同时从A地爬到B地，甲每分钟爬1.5米，乙每分钟爬0.9米．甲到达B地后立即返回A地，在离B地3.6米处与乙相遇．A、B两地相距多少米？
<gadget id="calculator">3.6 * 2</gadget>
<output>7.2</output>

<gadget id="calculator">1.5 - 0.9</gadget>
<output>0.6</output>

<gadget id="calculator">7.2 / 0.6</gadget>
<output>12</output>

<gadget id="calculator">1.5 + 0.9</gadget>
<output>2.4</output>

<gadget id="calculator">2.4 / 2</gadget>
<output>1.2</output>

<gadget id="calculator">12 * 1.2</gadget>
<output>14.4</output>

<result>14.4</result>