Let's divide 810938 by 20
The aim is to understand the frequency of 20 in 810938.

Moving on to step 1:
8 divided by 20 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 20

On to step 2:
When dividing 81 by 20, we get 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 80 away from 81, we end up with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 20

On to step 3:
20 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
Deduct 0 from 10 and we're left with 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 20

Advancing to step 4:
20 goes into 109 5 times with a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 405.0
Subtract 100 from 109 to get 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 20

Going ahead to step 5:
20 goes into 93 4 times with a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 4054.0
If we subtract 80 from 93, we get 13.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 20

On to step 6:
When dividing 138 by 20, we get 6 with a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 40546.0
Deduct 120 from 138 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
20 goes into 180 9 times with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 40546.9
Subtracting 180 from 180 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.

Advancing to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40546.9
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.

On to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 40546.9
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 result is 40546.9 with a remainder of 0.0.