We look at the division of 972798 by 99 
The aim is to understand the frequency of 99 in 972798.

On to step 1:
9 divided by 99 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 99

Let's proceed to step 2:
If we divide 97 by 99, we get 0 and a remainder of 97.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 97 and we're left with 97.
Grab the next digit (2) from the dividend, add it to 97, then carry on: 972 / 99

On to step 3:
When dividing 972 by 99, we get 9 with a remainder of 81.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 891 from 972 and we're left with 81.
Take the next digit (7) from the dividend and append it to 81, then repeat: 817 / 99

Going ahead to step 4:
817 divided by 99 is 8 with a remainder of 25.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
Subtracting 792 from 817 leaves us with 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 99

Advancing to step 5:
If we divide 259 by 99, we get 2 and a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 982.0
If we subtract 198 from 259, we get 61.
Bring next digit (8) of the dividend behind the 61 and repeat the process: 618 / 99

Step 6:
618 divided by 99 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 9826.0
Subtracting 594 from 618 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 7:
When dividing 240 by 99, we get 2 with a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 9826.2
Subtract 198 from 240 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 8:
If we divide 420 by 99, we get 4 and a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 9826.24
Subtracting 396 from 420 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
99 can be fit into 240 2 times, resulting in a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 9826.242
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 10:
420 divided by 99 is 4 with a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 9826.2424
Subtract 396 from 420 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
99 can be fit into 240 2 times, resulting in a remainder of 42.
The next digit of our result is 2. 
Result so far: 9826.24242
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 12:
If we divide 420 by 99, we get 4 and a remainder of 24.
The next digit of our result is 4. 
Result so far: 9826.242424
Deduct 396 from 420 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 13:
99 can be fit into 240 2 times, resulting in a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 9826.2424242
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 14:
If we divide 420 by 99, we get 4 and a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 9826.24242424
Subtracting 396 from 420 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 9826.24242424 and a remainder of 2.4e-08.