We're dividing 235687 by 23 
The aim is to understand the frequency of 23 in 235687.

On to step 1:
The number 23 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 23

On to step 2:
The number 23 fits into 23 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 23 from 23 to get 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 23

Going ahead to step 3:
When dividing 5 by 23, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 5, we get 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 23

Step 4:
56 divided by 23 is 2 with a remainder of 10.
The next digit of our result is 2. 
Result so far: 102.0
Subtract 46 from 56 to get 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 23

Moving on to step 5:
When dividing 108 by 23, we get 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 1024.0
Subtracting 92 from 108 leaves us with 16.
Fetch the next digit (7) from the dividend, attach it to 16 and continue: 167 / 23

Going ahead to step 6:
167 divided by 23 is 7 with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 10247.0
If we take 161 away from 167, we end up 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.

Step 7:
If we divide 60 by 23, we get 2 and a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 10247.2
Deduct 46 from 60 and we're left 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.

Advancing to step 8:
23 can be fit into 140 6 times, resulting in a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 10247.26
Subtracting 138 from 140 leaves us 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.

Going ahead to step 9:
23 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 10247.26
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 10:
200 divided by 23 is 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 10247.2608
If we take 184 away from 200, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
If we divide 160 by 23, we get 6 and a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 10247.26086
Subtract 138 from 160 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
When dividing 220 by 23, we get 9 with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 10247.260869
Subtracting 207 from 220 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 13:
If we divide 130 by 23, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 10247.2608695
Subtract 115 from 130 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 14:
150 divided by 23 is 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 10247.26086956
If we subtract 138 from 150, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 10247.26086956 with a remainder of 1.2e-08.