Complex sentence: As of December 31,2009, the 15 wholly owned properties had 7,550 hotel rooms; of casino space with 21,400 slot machines; and 425 table games.
Split into simpler sentences: As of December 31,2009, the 15 wholly owned properties had 7,550 hotel rooms. It also had of casino space with 21,400 slot machines and 425 table games.