We look at the division of 218723 by 23 
The aim is to understand the frequency of 23 in 218723.

Step 1:
23 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 23

Let's proceed to step 2:
21 divided by 23 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (8) from the dividend, attach it to 21 and continue: 218 / 23

Step 3:
If we divide 218 by 23, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 207 away from 218, we end up with 11.
Append the next digit (7) from the dividend to 11 and continue with: 117 / 23

Moving on to step 4:
The number 23 fits into 117 5 times, leaving a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 95.0
Deduct 115 from 117 and we're left with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 23

Moving on to step 5:
If we divide 22 by 23, we get 0 and a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 950.0
The remainder is 22 after subtracting 0 from 22.
Include the next digit (3) from the dividend after 22, then repeat: 223 / 23

Let's proceed to step 6:
If we divide 223 by 23, we get 9 and a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 9509.0
The remainder is 16 after subtracting 207 from 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
When dividing 160 by 23, we get 6 with a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 9509.6
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.

On to step 8:
23 can be fit into 220 9 times, resulting in a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 9509.69
Deduct 207 from 220 and we're left 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.

Step 9:
23 goes into 130 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 9509.695
Deduct 115 from 130 and we're left 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.

Moving on to step 10:
23 can be fit into 150 6 times, resulting in a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 9509.6956
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.

Moving on to step 11:
120 divided by 23 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 9509.69565
Subtract 115 from 120 to 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.

Advancing to step 12:
The number 23 fits into 50 2 times, leaving a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 9509.695652
If we take 46 away from 50, we end up 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.

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: 9509.6956521
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.

Moving on to step 14:
23 can be fit into 170 7 times, resulting in a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 9509.69565217
Subtracting 161 from 170 leaves us 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.

The quotient of the division is 9509.69565217, and the remainder is 9e-09.