We're dividing 454875 by 99 
The aim is to understand the frequency of 99 in 454875.

Moving on to step 1:
4 divided by 99 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 99

Let's proceed to step 2:
When dividing 45 by 99, we get 0 with a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Take the next digit (4) from the dividend and append it to 45, then repeat: 454 / 99

Let's proceed to step 3:
The number 99 fits into 454 4 times, leaving a remainder of 58.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 58 after subtracting 396 from 454.
Fetch the next digit (8) from the dividend, attach it to 58 and continue: 588 / 99

Moving on to step 4:
The number 99 fits into 588 5 times, leaving a remainder of 93.
The next digit of our result is 5. 
Result so far: 45.0
The remainder is 93 after subtracting 495 from 588.
Fetch the next digit (7) from the dividend, attach it to 93 and continue: 937 / 99

On to step 5:
937 divided by 99 is 9 with a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 459.0
The remainder is 46 after subtracting 891 from 937.
Take the next digit (5) from the dividend and append it to 46, then repeat: 465 / 99

Advancing to step 6:
99 can be fit into 465 4 times, resulting in a remainder of 69.
Record the quotient 4 as the next digit in the result. 
Result so far: 4594.0
If we take 396 away from 465, we end up 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.

Advancing to step 7:
If we divide 690 by 99, we get 6 and a remainder of 96.
The next digit of our result is 6. 
Result so far: 4594.6
Subtracting 594 from 690 leaves us 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.

Let's proceed to step 8:
If we divide 960 by 99, we get 9 and a remainder of 69.
The number 9 becomes the next digit in our result. 
Result so far: 4594.69
Deduct 891 from 960 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.

Going ahead to step 9:
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: 4594.696
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.

Let's proceed to step 10:
960 divided by 99 is 9 with a remainder of 69.
Use 9 as the next digit of our solution. 
Result so far: 4594.6969
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 11:
99 can be fit into 690 6 times, resulting in a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 4594.69696
Subtracting 594 from 690 leaves us 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.

Moving on to step 12:
If we divide 960 by 99, we get 9 and a remainder of 69.
The number 9 becomes the next digit in our result. 
Result so far: 4594.696969
If we take 891 away from 960, we end up 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 13:
99 goes into 690 6 times with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 4594.6969696
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.

Advancing to step 14:
The number 99 fits into 960 9 times, leaving a remainder of 69.
The next digit of our result is 9. 
Result so far: 4594.69696969
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 4594.69696969, with a leftover of 6.9e-08.