Two trains, A and B, depart from AB at the same time. When they meet, the ratio of the distance traveled by the two trains is 4:5. It is known that train B travels 72 kilometers per hour, and it takes 10 hours for train A to complete the journey. How many miles is the distance between A and B?
甲乙两列火车同时从AB两地相对开出，相遇时，甲乙两车所行的路程比为4：5，已知乙车每小时行72千米，甲车行完全程要10小时．AB两地相距多少千米？
<gadget id="calculator">72 / 5</gadget>
<output>72/5 = around 14.4</output>

<gadget id="calculator">(72/5) * 4 * 10</gadget>
<output>576</output>

<result>576</result>