45590 divided by 23 
The aim is to understand the frequency of 23 in 45590.

Going ahead to step 1:
23 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 23

On to step 2:
When dividing 45 by 23, we get 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 23 from 45 and we're left with 22.
Take the next digit (5) from the dividend and append it to 22, then repeat: 225 / 23

Let's proceed to step 3:
If we divide 225 by 23, we get 9 and a remainder of 18.
The next digit of our result is 9. 
Result so far: 19.0
The remainder is 18 after subtracting 207 from 225.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 23

Moving on to step 4:
If we divide 189 by 23, we get 8 and a remainder of 5.
The next digit of our result is 8. 
Result so far: 198.0
If we subtract 184 from 189, we get 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 23

Advancing to step 5:
When dividing 50 by 23, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 1982.0
The remainder is 4 after subtracting 46 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 6:
23 goes into 40 1 times with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1982.1
If we subtract 23 from 40, we 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.

Step 7:
170 divided by 23 is 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 1982.17
The remainder is 9 after subtracting 161 from 170.
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 8:
90 divided by 23 is 3 with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 1982.173
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.

Advancing to step 9:
210 divided by 23 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 1982.1739
The remainder is 3 after subtracting 207 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 10:
The number 23 fits into 30 1 times, leaving a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1982.17391
The remainder is 7 after subtracting 23 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 11:
70 divided by 23 is 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 1982.173913
Deduct 69 from 70 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 12:
23 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 1982.173913
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
The number 23 fits into 100 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 1982.17391304
If we subtract 92 from 100, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 1982.17391304 with a remaining 8e-09.