We look at the division of 859566 by 27 
The aim is to understand the frequency of 27 in 859566.

Let's proceed to step 1:
When dividing 8 by 27, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 27

Moving on to step 2:
When dividing 85 by 27, we get 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 81 away from 85, we end up with 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 27

Step 3:
If we divide 49 by 27, we get 1 and a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Subtract 27 from 49 to get 22.
Bring next digit (5) of the dividend behind the 22 and repeat the process: 225 / 27

Going ahead to step 4:
If we divide 225 by 27, we get 8 and a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 318.0
If we take 216 away from 225, we end up with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 27

Going ahead to step 5:
27 can be fit into 96 3 times, resulting in a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 3183.0
Subtracting 81 from 96 leaves us with 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 27

Step 6:
The number 27 fits into 156 5 times, leaving a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 31835.0
If we subtract 135 from 156, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
27 can be fit into 210 7 times, resulting in a remainder of 21.
The next digit of our result is 7. 
Result so far: 31835.7
Deduct 189 from 210 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
27 can be fit into 210 7 times, resulting in a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 31835.77
If we subtract 189 from 210, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

After the division, we end up with 31835.77 and a remainder of 0.021.