Complex sentence: The river's basin is 180 km (112 mi) long and 25 km (16 mi) wide and covers a total area of 3,500 km² (1351 mi²).
Split into simpler sentences: The river's basin is 180 km (112 mi) long and 25 km (16 mi) wide. It covers a total area of 3,500 km² (1351 mi²).