Complex sentence: By 1883, there were four services each way between Inverness and Perth, taking between and 7 hours and two years later the mail trains were re-scheduled to take 4 hours with five stops.
Split into simpler sentences: By 1883, there were four services each way between Inverness and Perth, taking between and 7 hours. Two years later the mail trains were scheduled to take 4 hours with five stops.