Floyd Mayweather Jr. boasted in a caption to a photo on his Instagram account, and later on Twitter, of his expected $70 million dollar payout for 36 minutes of fight time needed to beat Marcos Maidana by majority decision last Saturday night at the MGM Grand in Las Vegas. That's more than $5.8 million per round. Or nearly $1.95 million per minute. Or $32,407.41 per second. In 10 seconds or so Mayweather earned $324,074.10. Mayweather received a guarantee of $32 million for the fight and says he will get $38 million off the Showtime Pay-Per-View revenue.