train travels 560 kilometers in 4 hours. This train travels from station A to station B at the same speed for 7 hours. How many kilometers is the length of the railway between stations A and B? (Solve using ratio method)
一列火车4小时行驶560千米，这列火车用同样的速度从甲站到乙站共行了7小时，甲、乙两站间的铁路长多少千米？(用比例方法解答)
<result>680</result>