It is known that two people, A and B, start from A and B at the same time and go towards each other. After meeting for 4 hours, A car continues to drive for 3 hours to reach B. Car B travels 24 kilometers per hour. Find the total length.
已知甲、乙两人分别从A、B两地同时出发相向而行，经过4小时相遇后，甲车继续行驶3小时到达B地，乙车每小时行24千米，求全长．
<result>2_240</result>