We're dividing 828161 by 86 
The aim is to understand the frequency of 86 in 828161.

On to step 1:
86 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 86

Going ahead to step 2:
If we divide 82 by 86, we get 0 and a remainder of 82.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 82 leaves us with 82.
Append the next digit (8) from the dividend to 82 and continue with: 828 / 86

Moving on to step 3:
828 divided by 86 is 9 with a remainder of 54.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 774 from 828 to get 54.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 86

On to step 4:
The number 86 fits into 541 6 times, leaving a remainder of 25.
Write down 6 as next digit of the result. 
Result so far: 96.0
Subtract 516 from 541 to get 25.
Include the next digit (6) from the dividend after 25, then repeat: 256 / 86

On to step 5:
256 divided by 86 is 2 with a remainder of 84.
The next digit of our result is 2. 
Result so far: 962.0
Subtracting 172 from 256 leaves us with 84.
Take the next digit (1) from the dividend and append it to 84, then repeat: 841 / 86

Let's proceed to step 6:
If we divide 841 by 86, we get 9 and a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 9629.0
If we subtract 774 from 841, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 7:
86 goes into 670 7 times with a remainder of 68.
Put 7 as the next digit of the answer. 
Result so far: 9629.7
Deduct 602 from 670 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 8:
When dividing 680 by 86, we get 7 with a remainder of 78.
The number 7 becomes the next digit in our result. 
Result so far: 9629.77
The remainder is 78 after subtracting 602 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

After the division, we end up with 9629.77 and a remainder of 0.078.