Dario purchased a party size sub, and he decides to share it with 3 of his friends. So, he cuts the sub into 4 equal pieces. However, another one of his friends also showed up, and there are now 5 people in total

How many pieces will each person get?

Each person will get 4/5 of a piece.

I don't mind helping to find answers, but I resent having to provide the questions as well.