We look at the division of 352129 by 23 
The aim is to understand the frequency of 23 in 352129.

Let's proceed to step 1:
The number 23 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 23

Going ahead to step 2:
The number 23 fits into 35 1 times, leaving a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 23 from 35 leaves us with 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 23

Advancing to step 3:
The number 23 fits into 122 5 times, leaving a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 115 away from 122, we end up with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 23

Step 4:
When dividing 71 by 23, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 153.0
If we subtract 69 from 71, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 23

Let's proceed to step 5:
If we divide 22 by 23, we get 0 and a remainder of 22.
Put 0 as the next digit of the answer. 
Result so far: 1530.0
Deduct 0 from 22 and we're left with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 23

Moving on to step 6:
The number 23 fits into 229 9 times, leaving a remainder of 22.
The number 9 becomes the next digit in our result. 
Result so far: 15309.0
If we subtract 207 from 229, we 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 7:
When dividing 220 by 23, we get 9 with a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 15309.9
If we subtract 207 from 220, we get 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 8:
130 divided by 23 is 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 15309.95
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.

Going ahead to step 9:
150 divided by 23 is 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 15309.956
Deduct 138 from 150 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 10:
23 can be fit into 120 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 15309.9565
If we take 115 away from 120, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 11:
The number 23 fits into 50 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 15309.95652
Subtract 46 from 50 to 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.

Advancing to step 12:
If we divide 40 by 23, we get 1 and a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 15309.956521
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 13:
23 goes into 170 7 times with a remainder of 9.
The next digit of our result is 7. 
Result so far: 15309.9565217
If we take 161 away from 170, we end up with 9.
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 14:
The number 23 fits into 90 3 times, leaving a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 15309.95652173
Deduct 69 from 90 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The quotient of the division is 15309.95652173, and the remainder is 2.1e-08.