Two cars, A and B, depart from the two cities of AB at the same time. The two cars drive for 3 hours and meet at a distance of 36 kilometers from the midpoint. At this time, the bus travels 60% of the journey. Find the distance between the two cities of AB.
甲、乙两车同时从AB两城相对开出，两车行使3小时在距离中点36千米处相遇，这时客车行了全程的60%，求AB两城的距离．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) - (1/2)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">36 / (1/10)</gadget>
<output>360</output>

<result>360</result>