Cars A and B are driving opposite cities A and B. It is known that the speed of car A is that of car B (5/6). Car A drives 55 kilometers from City A, and then Car B starts from City B. When two cars meet, car A travels 30 kilometers longer than car B. Find the distance between cities A and B.
甲、乙两车从A，B两城市对开，已知甲车的速度是乙车的(5/6)．甲车先从A城开55千米后，乙车才从B城出发．两车相遇时，甲车比乙车多行驶30千米．试求A，B两城市之间的距离．
<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">25 / 1</gadget>
<output>25</output>

<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">25 * 11</gadget>
<output>275</output>

<gadget id="calculator">275 + 55</gadget>
<output>330</output>

<result>330</result>