Complex sentence: Pacquiao reportedly agreed to fight Mayweather on March 13,2010 for a split of $50 million up front, and it was later agreed that the venue for the fight would be the MGM Grand Las Vegas.
Split into simpler sentences: Pacquiao reportedly agreed to fight Mayweather on March 13,2010 for a split of $50 million up front. And it was later agreed that the venue for the fight would be the MGM Grand Las Vegas.