509256 divided by 86 
The aim is to understand the frequency of 86 in 509256.

Let's proceed to step 1:
The number 86 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 86

Advancing to step 2:
If we divide 50 by 86, we get 0 and a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 50, we get 50.
Fetch the next digit (9) from the dividend, attach it to 50 and continue: 509 / 86

Moving on to step 3:
When dividing 509 by 86, we get 5 with a remainder of 79.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 79 after subtracting 430 from 509.
Append the next digit (2) from the dividend to 79 and continue with: 792 / 86

Step 4:
86 goes into 792 9 times with a remainder of 18.
The next digit of our result is 9. 
Result so far: 59.0
Subtract 774 from 792 to get 18.
Fetch the next digit (5) from the dividend, attach it to 18 and continue: 185 / 86

On to step 5:
185 divided by 86 is 2 with a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 592.0
Subtract 172 from 185 to get 13.
Bring next digit (6) of the dividend behind the 13 and repeat the process: 136 / 86

On to step 6:
The number 86 fits into 136 1 times, leaving a remainder of 50.
Use 1 as the next digit of our solution. 
Result so far: 5921.0
If we take 86 away from 136, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 7:
86 can be fit into 500 5 times, resulting in a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 5921.5
Deduct 430 from 500 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
700 divided by 86 is 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 5921.58
Subtracting 688 from 700 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
86 goes into 120 1 times with a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 5921.581
If we take 86 away from 120, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 10:
The number 86 fits into 340 3 times, leaving a remainder of 82.
The number 3 becomes the next digit in our result. 
Result so far: 5921.5813
Subtracting 258 from 340 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 11:
820 divided by 86 is 9 with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 5921.58139
If we take 774 away from 820, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 12:
86 can be fit into 460 5 times, resulting in a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 5921.581395
Deduct 430 from 460 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 13:
The number 86 fits into 300 3 times, leaving a remainder of 42.
The next digit of our result is 3. 
Result so far: 5921.5813953
Subtracting 258 from 300 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 14:
420 divided by 86 is 4 with a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 5921.58139534
Subtract 344 from 420 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 5921.58139534, with a leftover of 7.6e-08.