Remember, this is a share of 10% of anything he wins over $20,000 after withholdings for taxes. For example, if he wins $100,000, Uncle Sam will keep $35,000 and Padilla keeps the first $20,000 of the $65,000 that's left and he shares 10% of the remaning $45,000, which is $4,500. So every non-winning seat in the first round gets 1% of that, which is $45, and every winning seat in the first round gets $450.
Random thoughts from a lawyer, an accountant, a commodities trader, an ex-Marine and a WSOP Main Event money finisher that don't know as much as they wish they did...