Cars A and B drive from city A to city B at the same speed. Car A drives 120 kilometers first, and then car B starts. Car A returns immediately after arriving at City B, and meets Car B at a distance (1/5) away from City B. How many kilometers are there between A and B?
甲、乙两车以同样的速度从A城开往B城，甲车先开出120千米，乙车才出发．甲车到达B城后立即返回，在距离B城(1/5)处和乙车相遇．A，B两城相距多少千米？
<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">60 / (1/5)</gadget>
<output>300</output>

<result>300</result>