Let's divide 573474 by 20
The aim is to understand the frequency of 20 in 573474.

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
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 20

Advancing to step 2:
20 goes into 57 2 times with a remainder of 17.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 40 from 57 leaves us with 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 20

Advancing to step 3:
The number 20 fits into 173 8 times, leaving a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 160 from 173 leaves us with 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 20

Let's proceed to step 4:
134 divided by 20 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 286.0
If we subtract 120 from 134, we get 14.
Include the next digit (7) from the dividend after 14, then repeat: 147 / 20

Step 5:
20 goes into 147 7 times with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 2867.0
The remainder is 7 after subtracting 140 from 147.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 20

Moving on to step 6:
If we divide 74 by 20, we get 3 and a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 28673.0
Subtracting 60 from 74 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
The number 20 fits into 140 7 times, leaving a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 28673.7
If we take 140 away from 140, 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.

Moving on to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 28673.7
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.

Moving on to step 9:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28673.7
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.

After the division, we end up with 28673.7 and a remainder of 0.0.