That simply means you are supposed to divide 36 by 9.
9.
36 1/9
Exactly 36 times
9 R 36
Exactly Four Times!
Exactly 9 times
It goes in it 4 times
1, 3, 9.
9: 1 2 3 4 6 9 12 18 36.
9x4=36 9 and 4 both go into 36
164 ÷ 36 = 4 20/36 = 4 5/9 (which is not even)