We look at the division of 583689 by 20 
The aim is to understand the frequency of 20 in 583689.

Let's proceed to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 20

Advancing to step 2:
If we divide 58 by 20, we get 2 and a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 40 from 58 and we're left with 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 20

Let's proceed to step 3:
20 goes into 183 9 times with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 29.0
If we subtract 180 from 183, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 20

Step 4:
When dividing 36 by 20, we get 1 with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 291.0
The remainder is 16 after subtracting 20 from 36.
Bring next digit (8) of the dividend behind the 16 and repeat the process: 168 / 20

Going ahead to step 5:
20 goes into 168 8 times with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 2918.0
If we take 160 away from 168, we end up with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 20

On to step 6:
20 can be fit into 89 4 times, resulting in a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 29184.0
If we take 80 away from 89, 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.

Moving on to step 7:
20 goes into 90 4 times with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 29184.4
Subtracting 80 from 90 leaves us 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.

Going ahead to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 29184.45
Subtracting 100 from 100 leaves us 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.

Going ahead to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 29184.45
Subtract 0 from 0 to 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.

Advancing to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 29184.45
Subtract 0 from 0 to 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.

The final result is 29184.45 with a remainder of 0.0.