The relation of the stacks are 50K to 35K, makes 50/35 = approx. 1,4 = 140%.
the money difference between first and second place was $80 so you should get 140% of the half of $80 = 56 bucks!
that would be a good chop for you.
Plus the money for second place for both of course.
And as I know myself, there're a ton of mistakes in it.......
Actually just a pot odd calculation.