We look at the division of 869175 by 99 
The aim is to understand the frequency of 99 in 869175.

Step 1:
If we divide 8 by 99, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 99

On to step 2:
99 goes into 86 0 times with a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Append the next digit (9) from the dividend to 86 and continue with: 869 / 99

On to step 3:
99 can be fit into 869 8 times, resulting in a remainder of 77.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 792 from 869 and we're left with 77.
Fetch the next digit (1) from the dividend, attach it to 77 and continue: 771 / 99

Advancing to step 4:
99 goes into 771 7 times with a remainder of 78.
Write down 7 as next digit of the result. 
Result so far: 87.0
Subtracting 693 from 771 leaves us with 78.
Fetch the next digit (7) from the dividend, attach it to 78 and continue: 787 / 99

Let's proceed to step 5:
The number 99 fits into 787 7 times, leaving a remainder of 94.
Use 7 as the next digit of our solution. 
Result so far: 877.0
Deduct 693 from 787 and we're left with 94.
Include the next digit (5) from the dividend after 94, then repeat: 945 / 99

Going ahead to step 6:
When dividing 945 by 99, we get 9 with a remainder of 54.
Write down 9 as next digit of the result. 
Result so far: 8779.0
The remainder is 54 after subtracting 891 from 945.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 7:
When dividing 540 by 99, we get 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 8779.5
Deduct 495 from 540 and we're left 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.

Moving on to step 8:
99 can be fit into 450 4 times, resulting in a remainder of 54.
Put 4 as the next digit of the answer. 
Result so far: 8779.54
If we take 396 away from 450, 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.

Let's proceed to step 9:
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: 8779.545
Deduct 495 from 540 and we're left 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.

Let's proceed to step 10:
99 goes into 450 4 times with a remainder of 54.
Write down 4 as next digit of the result. 
Result so far: 8779.5454
Deduct 396 from 450 and we're left 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 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: 8779.54545
Subtracting 495 from 540 leaves us 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.

Step 12:
99 can be fit into 450 4 times, resulting in a remainder of 54.
Write down 4 as next digit of the result. 
Result so far: 8779.545454
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.

Advancing to step 13:
540 divided by 99 is 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 8779.5454545
Deduct 495 from 540 and we're left 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.

Step 14:
99 goes into 450 4 times with a remainder of 54.
Write down 4 as next digit of the result. 
Result so far: 8779.54545454
If we take 396 away from 450, 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.

The final result is 8779.54545454 with a remainder of 5.4e-08.