We're dividing 443912 by 20 
The aim is to understand the frequency of 20 in 443912.

Step 1:
20 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 20

On to step 2:
When dividing 44 by 20, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 4 after subtracting 40 from 44.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 20

Moving on to step 3:
When dividing 43 by 20, we get 2 with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Deduct 40 from 43 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 20

Step 4:
39 divided by 20 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 221.0
Subtract 20 from 39 to get 19.
Take the next digit (1) from the dividend and append it to 19, then repeat: 191 / 20

Moving on to step 5:
20 can be fit into 191 9 times, resulting in a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 2219.0
Deduct 180 from 191 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 20

Moving on to step 6:
20 can be fit into 112 5 times, resulting in a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 22195.0
The remainder is 12 after subtracting 100 from 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
20 goes into 120 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 22195.6
Subtract 120 from 120 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.

Going ahead 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: 22195.6
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.

Going ahead to step 9:
20 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22195.6
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 quotient of the division is 22195.6, and the remainder is 0.0.