427103 ÷ 99 
The aim is to understand the frequency of 99 in 427103.

On 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
Subtract 0 from 4 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 99

Advancing to step 2:
99 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Include the next digit (7) from the dividend after 42, then repeat: 427 / 99

Going ahead to step 3:
99 can be fit into 427 4 times, resulting in a remainder of 31.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 396 away from 427, we end up with 31.
Grab the next digit (1) from the dividend, add it to 31, then carry on: 311 / 99

Moving on to step 4:
When dividing 311 by 99, we get 3 with a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 43.0
The remainder is 14 after subtracting 297 from 311.
Include the next digit (0) from the dividend after 14, then repeat: 140 / 99

Step 5:
If we divide 140 by 99, we get 1 and a remainder of 41.
The number 1 becomes the next digit in our result. 
Result so far: 431.0
Subtract 99 from 140 to get 41.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 99

Step 6:
99 can be fit into 413 4 times, resulting in a remainder of 17.
The next digit of our result is 4. 
Result so far: 4314.0
Deduct 396 from 413 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
If we divide 170 by 99, we get 1 and a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 4314.1
If we take 99 away from 170, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 8:
710 divided by 99 is 7 with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 4314.17
Subtracting 693 from 710 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 9:
If we divide 170 by 99, we get 1 and a remainder of 71.
The next digit of our result is 1. 
Result so far: 4314.171
Deduct 99 from 170 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 10:
The number 99 fits into 710 7 times, leaving a remainder of 17.
The next digit of our result is 7. 
Result so far: 4314.1717
Subtracting 693 from 710 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 11:
The number 99 fits into 170 1 times, leaving a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 4314.17171
Subtracting 99 from 170 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 12:
The number 99 fits into 710 7 times, leaving a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 4314.171717
If we take 693 away from 710, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 13:
99 goes into 170 1 times with a remainder of 71.
Record the quotient 1 as the next digit in the result. 
Result so far: 4314.1717171
Subtract 99 from 170 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 14:
The number 99 fits into 710 7 times, leaving a remainder of 17.
The next digit of our result is 7. 
Result so far: 4314.17171717
If we subtract 693 from 710, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 4314.17171717 and a remainder of 1.7e-08.