100842 ÷ 86 
The aim is to understand the frequency of 86 in 100842.

Step 1:
When dividing 1 by 86, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 86

Advancing to step 2:
The number 86 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 86

On to step 3:
The number 86 fits into 100 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 86 from 100, we get 14.
Append the next digit (8) from the dividend to 14 and continue with: 148 / 86

Moving on to step 4:
When dividing 148 by 86, we get 1 with a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
The remainder is 62 after subtracting 86 from 148.
Include the next digit (4) from the dividend after 62, then repeat: 624 / 86

Advancing to step 5:
624 divided by 86 is 7 with a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 117.0
If we take 602 away from 624, we end up with 22.
Take the next digit (2) from the dividend and append it to 22, then repeat: 222 / 86

Step 6:
86 can be fit into 222 2 times, resulting in a remainder of 50.
The number 2 becomes the next digit in our result. 
Result so far: 1172.0
Subtracting 172 from 222 leaves us 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.

Moving on to step 7:
When dividing 500 by 86, we get 5 with a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 1172.5
Subtracting 430 from 500 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
If we divide 700 by 86, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 1172.58
Subtract 688 from 700 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
When dividing 120 by 86, we get 1 with a remainder of 34.
The next digit of our result is 1. 
Result so far: 1172.581
Deduct 86 from 120 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 10:
340 divided by 86 is 3 with a remainder of 82.
Write down 3 as next digit of the result. 
Result so far: 1172.5813
If we subtract 258 from 340, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 11:
820 divided by 86 is 9 with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 1172.58139
Subtracting 774 from 820 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 12:
When dividing 460 by 86, we get 5 with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 1172.581395
If we take 430 away from 460, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 13:
The number 86 fits into 300 3 times, leaving a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 1172.5813953
Subtract 258 from 300 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 14:
If we divide 420 by 86, we get 4 and a remainder of 76.
The next digit of our result is 4. 
Result so far: 1172.58139534
Subtracting 344 from 420 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 1172.58139534, with a leftover of 7.6e-08.