Let's divide 943921 by 20
The aim is to understand the frequency of 20 in 943921.

Step 1:
When dividing 9 by 20, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 20

Advancing to step 2:
The number 20 fits into 94 4 times, leaving a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 80 from 94, we get 14.
Take the next digit (3) from the dividend and append it to 14, then repeat: 143 / 20

Moving on to step 3:
The number 20 fits into 143 7 times, leaving a remainder of 3.
The next digit of our result is 7. 
Result so far: 47.0
Deduct 140 from 143 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 20

Advancing to step 4:
20 goes into 39 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 471.0
If we take 20 away from 39, we end up with 19.
Grab the next digit (2) from the dividend, add it to 19, then carry on: 192 / 20

Step 5:
192 divided by 20 is 9 with a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 4719.0
If we subtract 180 from 192, we get 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 20

Let's proceed to step 6:
20 can be fit into 121 6 times, resulting in a remainder of 1.
Record the quotient 6 as the next digit in the result. 
Result so far: 47196.0
The remainder is 1 after subtracting 120 from 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
The number 20 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 47196.0
If we subtract 0 from 10, 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.

Step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 47196.05
Deduct 100 from 100 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.

On to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 47196.05
Deduct 0 from 0 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 10:
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: 47196.05
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.

The quotient of the division is 47196.05, and the remainder is 0.0.