676809 ÷ 20 
The aim is to understand the frequency of 20 in 676809.

On to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 20

On to step 2:
The number 20 fits into 67 3 times, leaving a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 60 from 67, we get 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 20

On to step 3:
20 can be fit into 76 3 times, resulting in a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 33.0
Subtracting 60 from 76 leaves us with 16.
Take the next digit (8) from the dividend and append it to 16, then repeat: 168 / 20

Step 4:
If we divide 168 by 20, we get 8 and a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 338.0
If we subtract 160 from 168, we get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 20

Going ahead to step 5:
20 can be fit into 80 4 times, resulting in a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 3384.0
Deduct 80 from 80 and we're left with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 20

Step 6:
The number 20 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 33840.0
Deduct 0 from 9 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
20 can be fit into 90 4 times, resulting in a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 33840.4
Deduct 80 from 90 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 33840.45
The remainder is 0 after subtracting 100 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 33840.45
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.

Going ahead to step 10:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 33840.45
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.

The quotient of the division is 33840.45, and the remainder is 0.0.