We look at the division of 988016 by 86 
The aim is to understand the frequency of 86 in 988016.

Step 1:
The number 86 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 86

Step 2:
86 goes into 98 1 times with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 12 after subtracting 86 from 98.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 86

On to step 3:
128 divided by 86 is 1 with a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 86 from 128 leaves us with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 86

Advancing to step 4:
The number 86 fits into 420 4 times, leaving a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 114.0
If we take 344 away from 420, we end up with 76.
Fetch the next digit (1) from the dividend, attach it to 76 and continue: 761 / 86

Going ahead to step 5:
The number 86 fits into 761 8 times, leaving a remainder of 73.
Record the quotient 8 as the next digit in the result. 
Result so far: 1148.0
Subtracting 688 from 761 leaves us with 73.
Bring next digit (6) of the dividend behind the 73 and repeat the process: 736 / 86

Moving on to step 6:
86 goes into 736 8 times with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 11488.0
If we take 688 away from 736, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 7:
When dividing 480 by 86, we get 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 11488.5
Deduct 430 from 480 and we're left 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.

Advancing to step 8:
The number 86 fits into 500 5 times, leaving a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 11488.55
If we subtract 430 from 500, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 11488.55, and the remainder is 0.07.