Ao Zebra set off from City A, while Xiaomei and Ou Ou set off from City B at the same time, walking towards each other. After Ao Zema and Xiao Mei met, Xiao Mei traveled another 3.2 hours to reach City A, Ao Zema traveled another two hours and met Ou Ou, after Ao Zema met Ou Ou, Ao Zema traveled another three hours to reach City B, Ou Ou traveled another 12 hours to reach City A. If Ou travels 30 kilometers less per hour than Xiaomei, how many kilometers are the distance between A and B?
奥斑马从A城，小美和欧欧从B城同时出发，相向而行．奥斑马、小美相遇后，小美又行了3.2小时到达A城，奥斑马又行了2小时遇到了欧欧，奥斑马与欧欧相遇后，奥斑马又行了3小时到达B城，欧欧又行了12小时到达A城．若欧欧每小时比小美少行30千米，那么A、B两城相距多少千米？
<gadget id="calculator">4 + 2 + 12</gadget>
<output>18</output>

<gadget id="calculator">20 * 18</gadget>
<output>360</output>

<result>360</result>