# `020` factorial

## 📝 Instructions:

1. Create a function named `factorial()`, which receives a number as a parameter and returns the factorial of the given number.

## 📎 Example input:

```py
factorial(8)
```

## 📎 Example output:

```py
40320
```

## 💡 Hint:

+ If you don't know what a factorial is, you can check it out on this link: https://www.cuemath.com/numbers/factorial/
