Here are some Examples: :)

is 0.2222222222 and so on

is 0.4444444444 and so on

is 0.777777777 and so on
So it could be anything like 9 or 6 as long is its like this

4 ounces are left because 3/4 of 20 is 5. And 1/5 of 5 is 4. I hope this helps
A.) wooden blue, wooden green.....
I did click on the picture but I can't see the problems it is zoomed in.
Liter is used to measure volume