Let's divide 354239 by 23
The aim is to understand the frequency of 23 in 354239.

Step 1:
3 divided by 23 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 23

Let's proceed to step 2:
35 divided by 23 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 23 from 35 and we're left with 12.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 23

On to step 3:
If we divide 124 by 23, we get 5 and a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtracting 115 from 124 leaves us with 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 23

On to step 4:
The number 23 fits into 92 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 154.0
If we subtract 92 from 92, we get 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 23

On to step 5:
The number 23 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 1540.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 23

Step 6:
39 divided by 23 is 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 15401.0
If we subtract 23 from 39, 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.

On to step 7:
23 goes into 160 6 times with a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 15401.6
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.

Moving on to step 8:
When dividing 220 by 23, we get 9 with a remainder of 13.
The next digit of our result is 9. 
Result so far: 15401.69
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.

Moving on to step 9:
When dividing 130 by 23, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 15401.695
Subtracting 115 from 130 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
23 goes into 150 6 times with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 15401.6956
Subtract 138 from 150 to 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.

Advancing to step 11:
If we divide 120 by 23, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 15401.69565
If we subtract 115 from 120, 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.

Going ahead to step 12:
If we divide 50 by 23, we get 2 and a remainder of 4.
The next digit of our result is 2. 
Result so far: 15401.695652
Deduct 46 from 50 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 13:
40 divided by 23 is 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 15401.6956521
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.

On to step 14:
If we divide 170 by 23, we get 7 and a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 15401.69565217
Subtract 161 from 170 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The quotient of the division is 15401.69565217, and the remainder is 9e-09.