The speed ratio of cars A and B is 5:4. Car B starts first and drives from station B to station A. When it is 72 kilometers away from station B, car A drives from station A to station B. The place where the two cars meet The distance ratio between A and B is 3:4, find the total distance between A and B.
甲、乙两车速度比为5：4，乙车先出发，从B站开往A站，当行到离B站72千米处，甲车从A站开往B站，两车相遇的地方距A、B两站的距离比为3：4，求A、B两站总路程．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 * (4/5)</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">4 - (12/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">72 / (8/5)</gadget>
<output>45</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">45 * 7</gadget>
<output>315</output>

<result>315</result>