I agree with Kitsune. I think Aokiji's paycheck should have been 24.800.000
--- Update From New Post Merge ---
Rather than saying the formula, I do a bounty forecast. That leaves the possibility for others to figure it out independently.
Match #12: Sushi with a Don!
Zoro vs Tom
Note that this should only be correct if Aokiji isn't. Also, I still haven't figured out the bounties of the prior champions.