Complex sentence: Opened July 18,1871, it has over 200,000 visitors daily, of which about 170,000 are travellers (105,000 with commuter trains, 25,000 with Arlanda Express and 40,000 with other trains).
Split into simpler sentences: Opened July 18,1871, it has over 200,000 passengers daily. Of them about 170,000 are travellers (105,000 with commuter trains, 25,000 with Arlanda Express and 40,000 with other trains).