812572 divided by 23 
The aim is to understand the frequency of 23 in 812572.

Advancing to step 1:
The number 23 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 23

Going ahead to step 2:
23 can be fit into 81 3 times, resulting in a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 69 from 81 and we're left with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 23

On to step 3:
The number 23 fits into 122 5 times, leaving a remainder of 7.
The next digit of our result is 5. 
Result so far: 35.0
If we subtract 115 from 122, we get 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 23

Moving on to step 4:
23 can be fit into 75 3 times, resulting in a remainder of 6.
The next digit of our result is 3. 
Result so far: 353.0
Subtracting 69 from 75 leaves us with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 23

Going ahead to step 5:
23 goes into 67 2 times with a remainder of 21.
Use 2 as the next digit of our solution. 
Result so far: 3532.0
Subtracting 46 from 67 leaves us with 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 23

Moving on to step 6:
The number 23 fits into 212 9 times, leaving a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 35329.0
If we subtract 207 from 212, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
50 divided by 23 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 35329.2
If we subtract 46 from 50, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
When dividing 40 by 23, we get 1 with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 35329.21
Deduct 23 from 40 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.

Advancing to step 9:
23 goes into 170 7 times with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 35329.217
The remainder is 9 after subtracting 161 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 10:
23 goes into 90 3 times with a remainder of 21.
The next digit of our result is 3. 
Result so far: 35329.2173
Subtract 69 from 90 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 11:
23 can be fit into 210 9 times, resulting in a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 35329.21739
Subtracting 207 from 210 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 12:
If we divide 30 by 23, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 35329.217391
The remainder is 7 after subtracting 23 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 13:
When dividing 70 by 23, we get 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 35329.2173913
The remainder is 1 after subtracting 69 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 14:
When dividing 10 by 23, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 35329.2173913
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 35329.2173913 with a remainder of 1e-08.