We look at the division of 488079 by 86 
The aim is to understand the frequency of 86 in 488079.

Let's proceed to step 1:
When dividing 4 by 86, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 86

On to step 2:
If we divide 48 by 86, we get 0 and a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 48 after subtracting 0 from 48.
Grab the next digit (8) from the dividend, add it to 48, then carry on: 488 / 86

Going ahead to step 3:
86 goes into 488 5 times with a remainder of 58.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 430 from 488 to get 58.
Bring next digit (0) of the dividend behind the 58 and repeat the process: 580 / 86

On to step 4:
86 goes into 580 6 times with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 56.0
If we subtract 516 from 580, we get 64.
Include the next digit (7) from the dividend after 64, then repeat: 647 / 86

Step 5:
86 can be fit into 647 7 times, resulting in a remainder of 45.
The number 7 becomes the next digit in our result. 
Result so far: 567.0
The remainder is 45 after subtracting 602 from 647.
Take the next digit (9) from the dividend and append it to 45, then repeat: 459 / 86

Moving on to step 6:
86 can be fit into 459 5 times, resulting in a remainder of 29.
Put 5 as the next digit of the answer. 
Result so far: 5675.0
Subtract 430 from 459 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 7:
86 can be fit into 290 3 times, resulting in a remainder of 32.
Use 3 as the next digit of our solution. 
Result so far: 5675.3
Subtracting 258 from 290 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 8:
86 can be fit into 320 3 times, resulting in a remainder of 62.
Write down 3 as next digit of the result. 
Result so far: 5675.33
If we subtract 258 from 320, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

After the division, we end up with 5675.33 and a remainder of 0.062.