Complex sentence: It reached number one on the Billboard Hot 100 for one week in June 1979 interrupting Donna Summer's "Hot Stuff", It would be the ninth and final number-one hit for the Bee Gees in the US.
Split into simpler sentences: It reached number one on the Billboard Hot 100 for one week in June 1979, interrupting Donna Summer's "Hot Stuff". It was the ninth and final number-one hit for the Bee Gees in the US.