91941 divided by 99 
The aim is to understand the frequency of 99 in 91941.

Advancing to step 1:
99 goes into 9 0 times with 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.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 99

Let's proceed to step 2:
If we divide 91 by 99, we get 0 and a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Include the next digit (9) from the dividend after 91, then repeat: 919 / 99

On to step 3:
99 goes into 919 9 times with a remainder of 28.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 891 from 919, we get 28.
Include the next digit (4) from the dividend after 28, then repeat: 284 / 99

Step 4:
If we divide 284 by 99, we get 2 and a remainder of 86.
Record the quotient 2 as the next digit in the result. 
Result so far: 92.0
If we take 198 away from 284, we end up with 86.
Fetch the next digit (1) from the dividend, attach it to 86 and continue: 861 / 99

Moving on to step 5:
861 divided by 99 is 8 with a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 928.0
Deduct 792 from 861 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 6:
99 can be fit into 690 6 times, resulting in a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 928.6
If we subtract 594 from 690, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 7:
99 can be fit into 960 9 times, resulting in a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 928.69
If we subtract 891 from 960, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 8:
If we divide 690 by 99, we get 6 and a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 928.696
If we subtract 594 from 690, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 9:
If we divide 960 by 99, we get 9 and a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 928.6969
Subtracting 891 from 960 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 10:
When dividing 690 by 99, we get 6 with a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 928.69696
The remainder is 96 after subtracting 594 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 11:
99 goes into 960 9 times with a remainder of 69.
Use 9 as the next digit of our solution. 
Result so far: 928.696969
If we subtract 891 from 960, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 12:
If we divide 690 by 99, we get 6 and a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 928.6969696
If we take 594 away from 690, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 13:
99 can be fit into 960 9 times, resulting in a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 928.69696969
Subtracting 891 from 960 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

The final outcome is 928.69696969, with a leftover of 6.9e-08.