We look at the division of 569443 by 20 
The aim is to understand the frequency of 20 in 569443.

Going ahead to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 20

On to step 2:
56 divided by 20 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 40 from 56 leaves us with 16.
Grab the next digit (9) from the dividend, add it to 16, then carry on: 169 / 20

Moving on to step 3:
When dividing 169 by 20, we get 8 with a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 28.0
Deduct 160 from 169 and we're left with 9.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 20

Advancing to step 4:
The number 20 fits into 94 4 times, leaving a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 284.0
Subtract 80 from 94 to get 14.
Include the next digit (4) from the dividend after 14, then repeat: 144 / 20

On to step 5:
20 can be fit into 144 7 times, resulting in a remainder of 4.
The next digit of our result is 7. 
Result so far: 2847.0
If we subtract 140 from 144, we get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 20

Going ahead to step 6:
20 can be fit into 43 2 times, resulting in a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 28472.0
The remainder is 3 after subtracting 40 from 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
20 can be fit into 30 1 times, resulting in a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 28472.1
If we subtract 20 from 30, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 28472.15
If we subtract 100 from 100, 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.

Step 9:
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: 28472.15
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.

Step 10:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 28472.15
Subtracting 0 from 0 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.

The final outcome is 28472.15, with a leftover of 0.0.