A train of passenger cars and a train of freight trains depart from A and B at the same time. It is known that the passenger train travels 120 kilometers per hour, and the speed ratio of the passenger train and the freight train is 3:2. The two trains met 1.5 hours after leaving. How many kilometers is the length of the railway between A and B?
一列客车和一列货车同时从甲乙两地相对开出，已知客车每小时行120千米，客车与货车的速度比是3：2．两车开出后1.5小时相遇，甲乙两地的铁路长多少千米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">120 * (2/3)</gadget>
<output>80</output>

<gadget id="calculator">120 + 80</gadget>
<output>200</output>

<gadget id="calculator">200 * 1.5</gadget>
<output>300</output>

<result>300</result>