The sentences here
https://seekingalpha.com/article/4135594-fannie-freddie-legislation-sounds-intractable
Corker came to Congress w/o a pot to piss in & is leaving worth $56,000,000. He must of taken his own advice to short Fannie & Freddie. I wish I had.
He must of taken his own advice to short Fannie & Freddie.
How to understand of taken his own advice
?
A typo or right expression ?