We look at the division of 231098 by 86 
The aim is to understand the frequency of 86 in 231098.

Moving on to step 1:
86 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 86

On to step 2:
If we divide 23 by 86, we get 0 and a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 23 leaves us with 23.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 86

Step 3:
231 divided by 86 is 2 with a remainder of 59.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 172 from 231, we get 59.
Take the next digit (0) from the dividend and append it to 59, then repeat: 590 / 86

Let's proceed to step 4:
86 goes into 590 6 times with a remainder of 74.
The next digit of our result is 6. 
Result so far: 26.0
If we take 516 away from 590, we end up with 74.
Include the next digit (9) from the dividend after 74, then repeat: 749 / 86

Moving on to step 5:
When dividing 749 by 86, we get 8 with a remainder of 61.
The number 8 becomes the next digit in our result. 
Result so far: 268.0
Deduct 688 from 749 and we're left with 61.
Append the next digit (8) from the dividend to 61 and continue with: 618 / 86

On to step 6:
When dividing 618 by 86, we get 7 with a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 2687.0
The remainder is 16 after subtracting 602 from 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
The number 86 fits into 160 1 times, leaving a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 2687.1
The remainder is 74 after subtracting 86 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 8:
86 can be fit into 740 8 times, resulting in a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 2687.18
If we subtract 688 from 740, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 9:
When dividing 520 by 86, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 2687.186
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.

Step 10:
If we divide 40 by 86, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 2687.186
If we subtract 0 from 40, we 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.

On to step 11:
If we divide 400 by 86, we get 4 and a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 2687.18604
Subtracting 344 from 400 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 12:
560 divided by 86 is 6 with a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 2687.186046
Subtract 516 from 560 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 13:
When dividing 440 by 86, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 2687.1860465
If we take 430 away from 440, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
100 divided by 86 is 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 2687.18604651
If we take 86 away from 100, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 2687.18604651, with a leftover of 1.4e-08.