We look at the division of 453672 by 99 
The aim is to understand the frequency of 99 in 453672.

Going ahead to step 1:
When dividing 4 by 99, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 99

Moving on to step 2:
When dividing 45 by 99, we get 0 with a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Append the next digit (3) from the dividend to 45 and continue with: 453 / 99

On to step 3:
99 goes into 453 4 times with a remainder of 57.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 57 after subtracting 396 from 453.
Fetch the next digit (6) from the dividend, attach it to 57 and continue: 576 / 99

Step 4:
If we divide 576 by 99, we get 5 and a remainder of 81.
The next digit of our result is 5. 
Result so far: 45.0
The remainder is 81 after subtracting 495 from 576.
Take the next digit (7) from the dividend and append it to 81, then repeat: 817 / 99

Step 5:
If we divide 817 by 99, we get 8 and a remainder of 25.
Put 8 as the next digit of the answer. 
Result so far: 458.0
Subtract 792 from 817 to get 25.
Fetch the next digit (2) from the dividend, attach it to 25 and continue: 252 / 99

Step 6:
99 can be fit into 252 2 times, resulting in a remainder of 54.
The number 2 becomes the next digit in our result. 
Result so far: 4582.0
If we take 198 away from 252, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 7:
99 goes into 540 5 times with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 4582.5
If we take 495 away from 540, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 8:
450 divided by 99 is 4 with a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 4582.54
Subtract 396 from 450 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 9:
540 divided by 99 is 5 with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 4582.545
If we subtract 495 from 540, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 10:
The number 99 fits into 450 4 times, leaving a remainder of 54.
Write down 4 as next digit of the result. 
Result so far: 4582.5454
The remainder is 54 after subtracting 396 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 11:
99 can be fit into 540 5 times, resulting in a remainder of 45.
The next digit of our result is 5. 
Result so far: 4582.54545
Subtract 495 from 540 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 12:
99 goes into 450 4 times with a remainder of 54.
The next digit of our result is 4. 
Result so far: 4582.545454
Subtract 396 from 450 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 13:
The number 99 fits into 540 5 times, leaving a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 4582.5454545
If we subtract 495 from 540, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 14:
450 divided by 99 is 4 with a remainder of 54.
The next digit of our result is 4. 
Result so far: 4582.54545454
Subtracting 396 from 450 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The quotient of the division is 4582.54545454, and the remainder is 5.4e-08.