We look at the division of 90697275 by 451 
The aim is to understand the frequency of 451 in 90697275.

Advancing to step 1:
9 divided by 451 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 451

Let's proceed to step 2:
If we divide 90 by 451, we get 0 and a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Include the next digit (6) from the dividend after 90, then repeat: 906 / 451

Moving on to step 3:
451 can be fit into 906 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 902 from 906 leaves us with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 451

On to step 4:
When dividing 49 by 451, we get 0 with a remainder of 49.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Subtracting 0 from 49 leaves us with 49.
Fetch the next digit (7) from the dividend, attach it to 49 and continue: 497 / 451

Let's proceed to step 5:
451 goes into 497 1 times with a remainder of 46.
The next digit of our result is 1. 
Result so far: 201.0
Deduct 451 from 497 and we're left with 46.
Include the next digit (2) from the dividend after 46, then repeat: 462 / 451

Let's proceed to step 6:
When dividing 462 by 451, we get 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 2011.0
If we subtract 451 from 462, we get 11.
Include the next digit (7) from the dividend after 11, then repeat: 117 / 451

Going ahead to step 7:
If we divide 117 by 451, we get 0 and a remainder of 117.
Use 0 as the next digit of our solution. 
Result so far: 20110.0
Deduct 0 from 117 and we're left with 117.
Take the next digit (5) from the dividend and append it to 117, then repeat: 1175 / 451

Moving on to step 8:
451 can be fit into 1175 2 times, resulting in a remainder of 273.
Write down 2 as next digit of the result. 
Result so far: 201102.0
The remainder is 273 after subtracting 902 from 1175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Step 9:
The number 451 fits into 2730 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 201102.6
If we subtract 2706 from 2730, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
240 divided by 451 is 0 with a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 201102.6
Subtracting 0 from 240 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 11:
2400 divided by 451 is 5 with a remainder of 145.
The next digit of our result is 5. 
Result so far: 201102.605
Subtracting 2255 from 2400 leaves us with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Let's proceed to step 12:
451 can be fit into 1450 3 times, resulting in a remainder of 97.
Use 3 as the next digit of our solution. 
Result so far: 201102.6053
Subtracting 1353 from 1450 leaves us with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 13:
The number 451 fits into 970 2 times, leaving a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 201102.60532
If we subtract 902 from 970, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 14:
451 goes into 680 1 times with a remainder of 229.
Put 1 as the next digit of the answer. 
Result so far: 201102.605321
Subtract 451 from 680 to get 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

On to step 15:
2290 divided by 451 is 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 201102.6053215
The remainder is 35 after subtracting 2255 from 2290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 16:
350 divided by 451 is 0 with a remainder of 350.
Use 0 as the next digit of our solution. 
Result so far: 201102.6053215
If we take 0 away from 350, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

In conclusion, the division gives 201102.6053215 with a balance of 3.5e-07.