I would have expected that at least getting the math correct would be easy! 
About the 2/3, how about this? 
"The Senate is currently composed of 52 Republicans, 46 Democrats, and 2 independents, both of whom caucus with the Democrats."
Yes, passage of certain measures will take a 2/3 majority in the Senate, unless the Republicans change the rules while the "game" is in progress.
BTW 52 as a fraction of 100 works out to 13/25. It's easy to do, trust me!