Two ships, A and B, sail from point A to point B at the same time. The speed of ship B is 1.2 times that of ship A. After 12 hours, ship B arrives at point B. At this time, ship A is still 54 kilometers away from point B. Find the distance between places A and B. (solution by equation)
甲、乙两船同时从A地开往B地，乙船的速度是甲船的1.2倍，经过12小时乙船到达B地，此时甲船离B地还有54千米．求A、B两地的路程．(用方程解)
<gadget id="calculator">54 / 2.4</gadget>
<output>22.5</output>

<gadget id="calculator">22.5 * 12</gadget>
<output>270</output>

<gadget id="calculator">270 + 54</gadget>
<output>324</output>

<result>324</result>