The passenger car and the freight car leave oppositely from two stations A and B at the same time. The passenger car travels 54 kilometers per hour, and the freight car travels 48 kilometers per hour. After the two cars meet, they continue to move forward at the original speed. Return immediately after station A, and start at the same time until the two cars meet twice, the passenger car travels 108 kilometers longer than the truck. So how many kilometers is the distance between A and B?
客车和货车同时从甲乙两站相对开出，客车每小时行54千米，货车每小时行48千米，两车相遇后又以原来的速度继续前进，客车到乙站后立即返回，货车到甲站后也立即返回，同时出发到两车两次相遇时，客车比货车多行108千米．那么甲乙两站间的路程是多少千米．
<gadget id="calculator">54 - 48</gadget>
<output>6</output>

<gadget id="calculator">108 / 6</gadget>
<output>18</output>

<gadget id="calculator">54 + 48</gadget>
<output>102</output>

<gadget id="calculator">102 / 3</gadget>
<output>34</output>

<gadget id="calculator">18 * 34</gadget>
<output>612</output>

<result>612</result>