We look at the division of 190402 by 23 
The aim is to understand the frequency of 23 in 190402.

Advancing to step 1:
The number 23 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 23

On to step 2:
23 goes into 19 0 times with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 23

Advancing to step 3:
23 goes into 190 8 times with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 184 from 190 leaves us with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 23

Let's proceed to step 4:
23 goes into 64 2 times with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
The remainder is 18 after subtracting 46 from 64.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 23

Advancing to step 5:
If we divide 180 by 23, we get 7 and a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 827.0
If we subtract 161 from 180, we get 19.
Include the next digit (2) from the dividend after 19, then repeat: 192 / 23

Going ahead to step 6:
If we divide 192 by 23, we get 8 and a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 8278.0
Subtracting 184 from 192 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
23 can be fit into 80 3 times, resulting in a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 8278.3
Deduct 69 from 80 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 8:
110 divided by 23 is 4 with a remainder of 18.
The next digit of our result is 4. 
Result so far: 8278.34
Deduct 92 from 110 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
When dividing 180 by 23, we get 7 with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 8278.347
If we subtract 161 from 180, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 10:
When dividing 190 by 23, we get 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 8278.3478
Subtracting 184 from 190 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 11:
The number 23 fits into 60 2 times, leaving a remainder of 14.
The next digit of our result is 2. 
Result so far: 8278.34782
Subtracting 46 from 60 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 12:
23 can be fit into 140 6 times, resulting in a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 8278.347826
If we take 138 away from 140, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
If we divide 20 by 23, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 8278.347826
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
23 can be fit into 200 8 times, resulting in a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 8278.34782608
If we subtract 184 from 200, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 8278.34782608, and the remainder is 1.6e-08.