Answer:
18.3
Explanation:
I put 109.72 in my caluator divide it by 6. I got 18.28667 (there's too many 6's so you don't need to worry about) The hundreths is number 8. You rounded up add 1 to the number 2 and you get 3. Your answer is 18.3
The reason why you need to rounded up is becauase the 8 which is in the hundredths is greater than 5, so you add 1. If it's not than greater than 5 don't add one, leave it the way it is.