Complex sentence: In its first week of sales, "Beg for Mercy" sold 377,000 copies, placing third behind Tupac Shakur's eighth posthumous release,', which moved 430,000 albums, and Jay-Z's "The Black Album", which sold 463,263 copies.
Split into simpler sentences: In its first week of sales, "Beg for Mercy" sold 377,000 copies. It placed third, behind Tupac Shakur's eighth posthumous release,', which moved 430,000 albums, and Jay-Z's "The Black Album", which sold 463,263 copies.