We divide 86135 by 20
The aim is to understand the frequency of 20 in 86135.

Moving on to step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 20

Moving on to step 2:
The number 20 fits into 86 4 times, leaving a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 80 from 86 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 20

Advancing to step 3:
When dividing 61 by 20, we get 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
If we subtract 60 from 61, we get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 20

On to step 4:
20 can be fit into 13 0 times, resulting in a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 430.0
Deduct 0 from 13 and we're left with 13.
Bring next digit (5) of the dividend behind the 13 and repeat the process: 135 / 20

On to step 5:
When dividing 135 by 20, we get 6 with a remainder of 15.
Write down 6 as next digit of the result. 
Result so far: 4306.0
The remainder is 15 after subtracting 120 from 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 6:
If we divide 150 by 20, we get 7 and a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 4306.7
Deduct 140 from 150 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.

Step 7:
20 goes into 100 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4306.75
Subtract 100 from 100 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.

On to step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 4306.75
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.

Let's proceed 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: 4306.75
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 4306.75 with a remainder of 0.0.