Complex sentence: It aired on Network Ten with the premiere (76 minute) episode shown on Sunday 20 January 1980, continuing five nights a week, Mondays to Fridays, as a 30 minute serial.
Split into simpler sentences: It aired on Network Ten with the premiere (76-minute) episode shown on Sunday, 20 January 1980. The series then ran five nights a week, Mondays to Fridays, as a 30 minute serial.