There is 6 parts in a two column format.
To get p - 9, subtract p2 + 3 from p2 + p - 6.
The closest you can get to a 2/3rds decimal is 0.66 and that goes to infinity.
It is a never ending decimal.
53x12=636 that is your answer that is the way to estimate it your answer is 636 that is how many students can be seated