We're dividing 518831 by 86 
The aim is to understand the frequency of 86 in 518831.

Step 1:
86 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 86

Going ahead to step 2:
When dividing 51 by 86, we get 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Take the next digit (8) from the dividend and append it to 51, then repeat: 518 / 86

Going ahead to step 3:
518 divided by 86 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 516 from 518 to get 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 86

Let's proceed to step 4:
If we divide 28 by 86, we get 0 and a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 60.0
If we subtract 0 from 28, we get 28.
Bring next digit (3) of the dividend behind the 28 and repeat the process: 283 / 86

Step 5:
86 can be fit into 283 3 times, resulting in a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 603.0
If we take 258 away from 283, we end up with 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 86

Advancing to step 6:
When dividing 251 by 86, we get 2 with a remainder of 79.
Write down 2 as next digit of the result. 
Result so far: 6032.0
If we take 172 away from 251, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 7:
790 divided by 86 is 9 with a remainder of 16.
The next digit of our result is 9. 
Result so far: 6032.9
The remainder is 16 after subtracting 774 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 8:
86 goes into 160 1 times with a remainder of 74.
The next digit of our result is 1. 
Result so far: 6032.91
Deduct 86 from 160 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 9:
The number 86 fits into 740 8 times, leaving a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 6032.918
The remainder is 52 after subtracting 688 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 10:
86 goes into 520 6 times with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 6032.9186
If we take 516 away from 520, we end up with 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 11:
When dividing 40 by 86, we get 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 6032.9186
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
400 divided by 86 is 4 with a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 6032.918604
The remainder is 56 after subtracting 344 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 13:
560 divided by 86 is 6 with a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 6032.9186046
Deduct 516 from 560 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 14:
86 can be fit into 440 5 times, resulting in a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 6032.91860465
If we subtract 430 from 440, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 6032.91860465 with a balance of 1e-08.