Let's divide 858766 by 20
The aim is to understand the frequency of 20 in 858766.

Step 1:
The number 20 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 20

Let's proceed to step 2:
When dividing 85 by 20, we get 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 80 away from 85, we end up with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 20

On to step 3:
If we divide 58 by 20, we get 2 and a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we take 40 away from 58, we end up with 18.
Fetch the next digit (7) from the dividend, attach it to 18 and continue: 187 / 20

Going ahead to step 4:
20 can be fit into 187 9 times, resulting in a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 429.0
Subtract 180 from 187 to get 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 20

Step 5:
76 divided by 20 is 3 with a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 4293.0
Subtract 60 from 76 to get 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 20

Let's proceed to step 6:
20 can be fit into 166 8 times, resulting in a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 42938.0
Subtract 160 from 166 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
The number 20 fits into 60 3 times, leaving a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 42938.3
Subtract 60 from 60 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.

Let's proceed to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 42938.3
If we subtract 0 from 0, we 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.

On 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: 42938.3
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.

Our division results in 42938.3 with a remaining 0.0.