Hey there!
Great question!
If Marie has 84 sweets, and she wants to give them away to 6 friends. You would have to do 84/6. It is unclear whether, Marie wants any sweets or not.
84/6=14
If you want Marie to receive sweets you can do
84/7=12
I got the number 7, because Marie and her 6 friends want sweets!
Each of her friends will receive 14 sweets, and she will receive none!
The answer is 12 or none.