625668 divided by 23 
The aim is to understand the frequency of 23 in 625668.

Going ahead to step 1:
The number 23 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 23

On to step 2:
62 divided by 23 is 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 46 away from 62, we end up with 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 23

Let's proceed to step 3:
When dividing 165 by 23, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 27.0
Subtract 161 from 165 to get 4.
Take the next digit (6) from the dividend and append it to 4, then repeat: 46 / 23

Advancing to step 4:
The number 23 fits into 46 2 times, leaving a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 272.0
Subtracting 46 from 46 leaves us with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 23

Advancing to step 5:
23 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 2720.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 23

Moving on to step 6:
If we divide 68 by 23, we get 2 and a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 27202.0
The remainder is 22 after subtracting 46 from 68.
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 7:
220 divided by 23 is 9 with a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 27202.9
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 8:
130 divided by 23 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 27202.95
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 9:
When dividing 150 by 23, we get 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 27202.956
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 10:
23 can be fit into 120 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 27202.9565
Subtracting 115 from 120 leaves us 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.

Let's proceed to step 11:
23 goes into 50 2 times with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 27202.95652
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.

Going ahead to step 12:
40 divided by 23 is 1 with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 27202.956521
Subtract 23 from 40 to get 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 13:
170 divided by 23 is 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 27202.9565217
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.

Advancing to step 14:
When dividing 90 by 23, we get 3 with a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 27202.95652173
Subtract 69 from 90 to get 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 final outcome is 27202.95652173, with a leftover of 2.1e-08.