Let's divide 12574 by 20
The aim is to understand the frequency of 20 in 12574.

Going ahead to step 1:
20 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 20

Step 2:
12 divided by 20 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 20

Step 3:
20 goes into 125 6 times with a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 120 from 125 and we're left with 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 20

On to step 4:
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: 62.0
Subtracting 40 from 57 leaves us with 17.
Bring next digit (4) of the dividend behind the 17 and repeat the process: 174 / 20

Step 5:
20 can be fit into 174 8 times, resulting in a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 628.0
Deduct 160 from 174 and we're left 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.

Advancing to step 6:
140 divided by 20 is 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 628.7
Deduct 140 from 140 and we're left 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 7:
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: 628.7
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.

Moving on to step 8:
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: 628.7
If we subtract 0 from 0, 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.

Our division results in 628.7 with a remaining 0.0.