Floyd Mayweather One-Ups 50's Reading Challenge

Read THIS.

So it took him a bit longer to respond to 50 Cent's challenge, but boxer Floyd Mayweather has given a roundabout nod to the rapper's throwing of the gauntlet.

For those of you just joining us, 50 Cent taunted Mayweather on Thursday with an Instagram video daring him to submit video of him reading, "a full page out of a 'Harry Potter' book out loud without starting and stopping or f–-king up." In return, 50 would donate $750,000 to the charity of Mayweather's choice.

Well, Mayweather didn't post a video, but he did toss up a pic demonstrating his math skills:

"Read this $72,276,000.00. God bless," he captioned the snap.

Oh, boy. This really escalated quickly.

We recently asked 50 Cent if he'd accept the title of being "the ultimate troll." Hear what he had to say in the video below.