Let's divide 911201 by 99
The aim is to understand the frequency of 99 in 911201.

On to step 1:
If we divide 9 by 99, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 99

Going ahead to step 2:
99 can be fit into 91 0 times, resulting in a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Take the next digit (1) from the dividend and append it to 91, then repeat: 911 / 99

Step 3:
911 divided by 99 is 9 with a remainder of 20.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 891 from 911, we get 20.
Include the next digit (2) from the dividend after 20, then repeat: 202 / 99

Going ahead to step 4:
When dividing 202 by 99, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 92.0
Subtracting 198 from 202 leaves us with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 99

Going ahead to step 5:
If we divide 40 by 99, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 920.0
If we take 0 away from 40, we end up with 40.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 99

Step 6:
401 divided by 99 is 4 with a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 9204.0
If we subtract 396 from 401, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
When dividing 50 by 99, we get 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 9204.0
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
If we divide 500 by 99, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 9204.05
Subtract 495 from 500 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
When dividing 50 by 99, we get 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 9204.05
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
When dividing 500 by 99, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 9204.0505
Deduct 495 from 500 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
50 divided by 99 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 9204.0505
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 12:
99 can be fit into 500 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 9204.050505
If we subtract 495 from 500, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
50 divided by 99 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 9204.050505
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 14:
500 divided by 99 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 9204.05050505
If we take 495 away from 500, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 9204.05050505 with a remainder of 5e-09.