We're dividing 539399 by 8 
The aim is to understand the frequency of 8 in 539399.

Going ahead to step 1:
If we divide 5 by 8, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 8

On to step 2:
The number 8 fits into 53 6 times, leaving a remainder of 5.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 48 from 53, we get 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 8

Let's proceed to step 3:
59 divided by 8 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 67.0
Deduct 56 from 59 and we're left with 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 8

On to step 4:
If we divide 33 by 8, we get 4 and a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 674.0
The remainder is 1 after subtracting 32 from 33.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 8

Going ahead to step 5:
8 can be fit into 19 2 times, resulting in a remainder of 3.
The next digit of our result is 2. 
Result so far: 6742.0
The remainder is 3 after subtracting 16 from 19.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 8

Step 6:
The number 8 fits into 39 4 times, leaving a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 67424.0
If we subtract 32 from 39, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
When dividing 70 by 8, we get 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 67424.8
If we take 64 away from 70, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
60 divided by 8 is 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 67424.87
Subtract 56 from 60 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
If we divide 40 by 8, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 67424.875
The remainder is 0 after subtracting 40 from 40.
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 8 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 67424.875
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.

Step 11:
When dividing 0 by 8, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 67424.875
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 67424.875 with a remaining 0.0.