It takes 12 hours for a passenger car to drive from point A to point B, and it takes 15 hours for a truck to drive from point B to point A. The two cars leave opposite to each other at the same time. When the bus arrives at point B, the truck exceeds the midpoint by 180 How many kilometers is the distance between A and B?
一辆客车从A地开往B地要12小时，一辆货车从B地开往A地要15小时，两车同时从两地相对开出，当客车到达B地时，货车超过中点180千米，A、B两地相距多少千米？
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/15) * 12</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/5) - (1/2)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">180 / (3/10)</gadget>
<output>600</output>

<result>600</result>