We're dividing 91764988 by 455 
The aim is to understand the frequency of 455 in 91764988.

Going ahead to step 1:
When dividing 9 by 455, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 455

On to step 2:
91 divided by 455 is 0 with a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Fetch the next digit (7) from the dividend, attach it to 91 and continue: 917 / 455

Advancing to step 3:
455 goes into 917 2 times with a remainder of 7.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 910 from 917 and we're left with 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 455

Advancing to step 4:
If we divide 76 by 455, we get 0 and a remainder of 76.
Write down 0 as next digit of the result. 
Result so far: 20.0
Deduct 0 from 76 and we're left with 76.
Append the next digit (4) from the dividend to 76 and continue with: 764 / 455

Going ahead to step 5:
455 goes into 764 1 times with a remainder of 309.
The number 1 becomes the next digit in our result. 
Result so far: 201.0
Subtract 455 from 764 to get 309.
Take the next digit (9) from the dividend and append it to 309, then repeat: 3099 / 455

Going ahead to step 6:
455 goes into 3099 6 times with a remainder of 369.
The next digit of our result is 6. 
Result so far: 2016.0
Subtracting 2730 from 3099 leaves us with 369.
Grab the next digit (8) from the dividend, add it to 369, then carry on: 3698 / 455

Going ahead to step 7:
When dividing 3698 by 455, we get 8 with a remainder of 58.
Record the quotient 8 as the next digit in the result. 
Result so far: 20168.0
The remainder is 58 after subtracting 3640 from 3698.
Include the next digit (8) from the dividend after 58, then repeat: 588 / 455

Step 8:
455 can be fit into 588 1 times, resulting in a remainder of 133.
The number 1 becomes the next digit in our result. 
Result so far: 201681.0
Deduct 455 from 588 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Moving on to step 9:
The number 455 fits into 1330 2 times, leaving a remainder of 420.
The number 2 becomes the next digit in our result. 
Result so far: 201681.2
Deduct 910 from 1330 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

On to step 10:
455 goes into 4200 9 times with a remainder of 105.
The next digit of our result is 9. 
Result so far: 201681.29
The remainder is 105 after subtracting 4095 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 11:
455 can be fit into 1050 2 times, resulting in a remainder of 140.
Put 2 as the next digit of the answer. 
Result so far: 201681.292
Subtract 910 from 1050 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 12:
When dividing 1400 by 455, we get 3 with a remainder of 35.
Record the quotient 3 as the next digit in the result. 
Result so far: 201681.2923
Subtracting 1365 from 1400 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 13:
350 divided by 455 is 0 with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 201681.2923
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 14:
When dividing 3500 by 455, we get 7 with a remainder of 315.
Put 7 as the next digit of the answer. 
Result so far: 201681.292307
Subtract 3185 from 3500 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Let's proceed to step 15:
The number 455 fits into 3150 6 times, leaving a remainder of 420.
Record the quotient 6 as the next digit in the result. 
Result so far: 201681.2923076
If we take 2730 away from 3150, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

On to step 16:
455 can be fit into 4200 9 times, resulting in a remainder of 105.
Put 9 as the next digit of the answer. 
Result so far: 201681.29230769
Deduct 4095 from 4200 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

The final outcome is 201681.29230769, with a leftover of 1.05e-07.