A more thorough explanation:

Definition: Usual is an adjective that means something is ordinary or customary. It is also something that is expected based on previous experience.

• It's usual for me to have a cup of coffee in the morning.
• It's usual for the store to close at 9 pm.
• It's usual for the teacher to give a quiz every Friday.

These examples illustrate how usual is used to describe something that is common or expected. In the first example, having a cup of coffee in the morning is a usual routine for the person. In the second example, the store closing at 9 pm is a usual time for it to close. In the third example, the teacher giving a quiz every Friday is a usual occurrence in the class.