816081 ÷ 99 
The aim is to understand the frequency of 99 in 816081.

On to step 1:
99 goes into 8 0 times with 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.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 99

Step 2:
When dividing 81 by 99, we get 0 with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Append the next digit (6) from the dividend to 81 and continue with: 816 / 99

Let's proceed to step 3:
When dividing 816 by 99, we get 8 with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we subtract 792 from 816, we get 24.
Grab the next digit (0) from the dividend, add it to 24, then carry on: 240 / 99

Going ahead to step 4:
If we divide 240 by 99, we get 2 and a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
Deduct 198 from 240 and we're left with 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 99

Advancing to step 5:
99 can be fit into 428 4 times, resulting in a remainder of 32.
The next digit of our result is 4. 
Result so far: 824.0
The remainder is 32 after subtracting 396 from 428.
Bring next digit (1) of the dividend behind the 32 and repeat the process: 321 / 99

Moving on to step 6:
The number 99 fits into 321 3 times, leaving a remainder of 24.
The next digit of our result is 3. 
Result so far: 8243.0
The remainder is 24 after subtracting 297 from 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 7:
240 divided by 99 is 2 with a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 8243.2
Deduct 198 from 240 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 8:
420 divided by 99 is 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 8243.24
If we take 396 away from 420, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 9:
240 divided by 99 is 2 with a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 8243.242
If we subtract 198 from 240, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
420 divided by 99 is 4 with a remainder of 24.
The next digit of our result is 4. 
Result so far: 8243.2424
Subtracting 396 from 420 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
If we divide 240 by 99, we get 2 and a remainder of 42.
Use 2 as the next digit of our solution. 
Result so far: 8243.24242
If we subtract 198 from 240, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 12:
99 goes into 420 4 times with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 8243.242424
If we take 396 away from 420, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 13:
When dividing 240 by 99, we get 2 with a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 8243.2424242
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 14:
420 divided by 99 is 4 with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 8243.24242424
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The quotient of the division is 8243.24242424, and the remainder is 2.4e-08.