Complex sentence: Académico 83 is the most successful football (soccer) club on Maio having won about 16 official regional titles, of which are nine championship titles, three cup and super cup titles and an opening tournament title.
Split into simpler sentences: Académico 83 is the most successful football (soccer) club on Maio having won about 16 official regional titles. The club has nine regional championship titles, three cup and super cup titles and an opening tournament title.