question: The school auditorium has 4 rows of seats. There are 18 seats in each row. One-fourth of the seats were occupied by the administrators. One-third of the remaining seats were occupied by the parents and the rest were occupied by the students. How many students were there in the school auditorium?
answer: There are 4 x 18 = <<4*18=72>>72 seats in the school auditorium.
  72 x1/4 = <<72*1/4=18>>18 seats were occupied by the administrators.
  There were 72 - 18 = <<72-18=54>>54 seats not occupied by the administrators.
  54 x 1/3 = <<54*1/3=18>>18 seats were occupied by the parents.
  So, 54 - 18 = <<54-18=36>>36 seats were occupied by the students.
  #### 36