We look at the division of 685755 by 20 
The aim is to understand the frequency of 20 in 685755.

Going ahead to step 1:
When dividing 6 by 20, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 20

Step 2:
If we divide 68 by 20, we get 3 and a remainder of 8.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 60 from 68 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 20

Going ahead to step 3:
85 divided by 20 is 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Subtracting 80 from 85 leaves us with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 20

Advancing to step 4:
57 divided by 20 is 2 with a remainder of 17.
The next digit of our result is 2. 
Result so far: 342.0
Deduct 40 from 57 and we're left with 17.
Grab the next digit (5) from the dividend, add it to 17, then carry on: 175 / 20

Moving on to step 5:
When dividing 175 by 20, we get 8 with a remainder of 15.
Record the quotient 8 as the next digit in the result. 
Result so far: 3428.0
Subtract 160 from 175 to get 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 20

Step 6:
20 goes into 155 7 times with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 34287.0
The remainder is 15 after subtracting 140 from 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
The number 20 fits into 150 7 times, leaving a remainder of 10.
The next digit of our result is 7. 
Result so far: 34287.7
The remainder is 10 after subtracting 140 from 150.
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:
If we divide 100 by 20, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 34287.75
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.

Advancing to step 9:
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: 34287.75
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
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: 34287.75
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.

After the division, we end up with 34287.75 and a remainder of 0.0.