919651 divided by 99 
The aim is to understand the frequency of 99 in 919651.

Let's proceed to step 1:
If we divide 9 by 99, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 99

On to step 2:
If we divide 91 by 99, we get 0 and a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Grab the next digit (9) from the dividend, add it to 91, then carry on: 919 / 99

Going ahead to step 3:
If we divide 919 by 99, we get 9 and a remainder of 28.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 891 from 919 leaves us with 28.
Include the next digit (6) from the dividend after 28, then repeat: 286 / 99

Let's proceed to step 4:
If we divide 286 by 99, we get 2 and a remainder of 88.
The next digit of our result is 2. 
Result so far: 92.0
Deduct 198 from 286 and we're left with 88.
Include the next digit (5) from the dividend after 88, then repeat: 885 / 99

Going ahead to step 5:
The number 99 fits into 885 8 times, leaving a remainder of 93.
Put 8 as the next digit of the answer. 
Result so far: 928.0
If we take 792 away from 885, we end up with 93.
Bring next digit (1) of the dividend behind the 93 and repeat the process: 931 / 99

Moving on to step 6:
The number 99 fits into 931 9 times, leaving a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 9289.0
If we subtract 891 from 931, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
99 can be fit into 400 4 times, resulting in a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 9289.4
If we take 396 away from 400, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
99 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 9289.4
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
If we divide 400 by 99, we get 4 and a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 9289.404
If we subtract 396 from 400, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
The number 99 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 9289.404
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 11:
The number 99 fits into 400 4 times, leaving a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 9289.40404
If we subtract 396 from 400, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
99 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 9289.40404
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 13:
400 divided by 99 is 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 9289.4040404
The remainder is 4 after subtracting 396 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
99 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 9289.4040404
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 9289.4040404 with a remainder of 4e-08.