We look at the division of 23483518 by 20 
The aim is to understand the frequency of 20 in 23483518.

Going ahead to step 1:
If we divide 2 by 20, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 20

Moving on to step 2:
20 goes into 23 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 3 after subtracting 20 from 23.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 20

On to step 3:
34 divided by 20 is 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 20 from 34 leaves us with 14.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 20

Step 4:
The number 20 fits into 148 7 times, leaving a remainder of 8.
The next digit of our result is 7. 
Result so far: 117.0
Subtract 140 from 148 to get 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 20

Advancing to step 5:
20 goes into 83 4 times with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 1174.0
Deduct 80 from 83 and we're left with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 20

On to step 6:
20 goes into 35 1 times with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 11741.0
If we take 20 away from 35, we end up with 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 20

Advancing to step 7:
151 divided by 20 is 7 with a remainder of 11.
The next digit of our result is 7. 
Result so far: 117417.0
Subtracting 140 from 151 leaves us with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 20

Advancing to step 8:
When dividing 118 by 20, we get 5 with a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 1174175.0
If we subtract 100 from 118, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
When dividing 180 by 20, we get 9 with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 1174175.9
If we subtract 180 from 180, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1174175.9
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1174175.9
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 1174175.9 with a remainder of 0.0.