Complex sentence: Stir Crazy opened in 813 theaters worldwide on December 12,1980 and grossed $8,691,886 in it's opening weekend with an average of $10,691 per theater.
Split into simpler sentences: Stir Crazy opened in 813 theaters worldwide on December 12,1980. It grossed $8,691,886 in it's opening weekend with an average of $10,691 per theater.