We look at the division of 580738 by 20 
The aim is to understand the frequency of 20 in 580738.

Advancing to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 20

On to step 2:
20 goes into 58 2 times with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 40 away from 58, we end up with 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 20

Let's proceed to step 3:
180 divided by 20 is 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 29.0
If we take 180 away from 180, we end up with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 20

Let's proceed to step 4:
20 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 290.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 20

Going ahead to step 5:
If we divide 73 by 20, we get 3 and a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 2903.0
The remainder is 13 after subtracting 60 from 73.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 20

Advancing to step 6:
If we divide 138 by 20, we get 6 and a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 29036.0
If we take 120 away from 138, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 7:
180 divided by 20 is 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 29036.9
Subtracting 180 from 180 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.

Advancing to step 8:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 29036.9
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.

On to step 9:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 29036.9
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 29036.9 with a remainder of 0.0.