What is the remainder when $7!$ is divided by $23$?

(Note: $n!$ means "n factorial", defined as the product of all integers from $1$ to $n$.)
Question:
What is the remainder when $7!$ is divided by $23$?

(Note: $n!$ means "n factorial", defined as the product of all integers from $1$ to $n$.)
Answer:
Let's think step by step.

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What is the remainder when $7!$ is divided by $23$?

(Note: $n!$ means "n factorial", defined as the product of all integers from $1$ to $n$.)
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