"exactly divisible by 9" means any number that can be divided by 9 and result in a whole number, a number without a decimal.
243 ÷ 9 = 27
516 ÷ 9 = 57.3333....
941 ÷ 9 = 104.5555....
166 ÷ 9 = 18.4444....
612 ÷ 9 = 68
The only numbers that were able to be divided by 9 and result in a whole number were 243 and 612.
So the answers are 243 and 612.
Hope this helps! :)