Basically, it is (R being rows) (S being seats) R times the amount of rows plus 12 is the amount of seats in each row RAmnt + 12 You know there are 1564 seats You don’t know the amount of rows You know the amount of seats in the row minus 12 is the amount of rows in all seat per row - 12 = rows To make it easier start making up the number of rows that are possible Just do x - 12x over and over with the different numbers X= 1564/y For example If y is 5 312.8 - 12y which would be 252.8