train of passenger cars and a train of trucks depart from places A and B at the same time. After meeting, the two cars continue to move forward. When the passenger car arrives at point B and the truck arrives at point A, the two cars return immediately. A place is 120 kilometers away, and the speed ratio of passenger cars to trucks is 3:2. How many kilometers are there between places A and B?
一列客车和一列货车同时从甲、乙地相对开出，相遇后两车继续向前行驶，当客车到达乙地，货车到达甲地后，两车立即返回，已知第二次相遇的地点距甲地120千米，客车与货车的速度比是3：2，甲、乙两地相距多少千米？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) * 3</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">2 - (9/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">120 / (1/5)</gadget>
<output>600</output>

<result>600</result>