A passenger car and a truck depart from A and B oppositely at the same time, the passenger car travels 54 kilometers per hour, and the truck travels 48 kilometers per hour. After the two vehicles met, they continued to move forward at the original speed, and returned immediately after reaching the two places. The two vehicles met for the third time at a distance of 18 kilometers from the midpoint. Find the distance between A and B?
客车和货车同时从甲、乙两地相对开出，客车每小时行54千米，货车每小时行48干米．两车相遇后又以原速度继续前进，到达两地后立即返回，两车在距中点18千米处第三次相遇．求甲、乙两地的距离？
<gadget id="calculator">54 - 48</gadget>
<output>6</output>

<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

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

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

<gadget id="calculator">18 * (1/3) * 34</gadget>
<output>204</output>

<result>204</result>