Test whether 239976 is divisible by 9999 or not.

Explanation

To determine whether 239976 is divisible by 9999, we can follow these steps:

### Step 1: Group the digits
We will group the digits of the number 239976 into sets of four, starting from the right. Since the number has six digits, we will have one group of four digits and one group of two digits.

- The number is: 239976
- Grouping from the right:
- First group: 9976
...