Two cars, A and B, drive from point A to point B at the same time. It takes 10 hours for car A and 15 hours for car B to complete the journey. When car A arrives at point B, it returns immediately and meets car B at a distance of 72 kilometers from point B. Find the distance between AB and AB in kilometers?
甲乙两车同时从A地开往B地，行完全程甲车要10小时，乙车要15小时，当甲车到达B地后，立即返回在距B地72千米处与乙车相遇，求AB两地相距多少千米？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/10) / (1/15)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * 72</gadget>
<output>108</output>

<gadget id="calculator">108 + 72</gadget>
<output>180</output>

<gadget id="calculator">(3/2) - 1</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">180 / (1/2)</gadget>
<output>360</output>

<result>360</result>