We look at the division of 841870 by 86 
The aim is to understand the frequency of 86 in 841870.

Moving on to step 1:
If we divide 8 by 86, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 86

Moving on to step 2:
84 divided by 86 is 0 with a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 84 after subtracting 0 from 84.
Include the next digit (1) from the dividend after 84, then repeat: 841 / 86

On to step 3:
86 goes into 841 9 times with a remainder of 67.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 774 from 841, we get 67.
Fetch the next digit (8) from the dividend, attach it to 67 and continue: 678 / 86

Advancing to step 4:
If we divide 678 by 86, we get 7 and a remainder of 76.
Write down 7 as next digit of the result. 
Result so far: 97.0
If we subtract 602 from 678, we get 76.
Include the next digit (7) from the dividend after 76, then repeat: 767 / 86

On to step 5:
767 divided by 86 is 8 with a remainder of 79.
The number 8 becomes the next digit in our result. 
Result so far: 978.0
Subtracting 688 from 767 leaves us with 79.
Append the next digit (0) from the dividend to 79 and continue with: 790 / 86

On to step 6:
When dividing 790 by 86, we get 9 with a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 9789.0
Deduct 774 from 790 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
160 divided by 86 is 1 with a remainder of 74.
The next digit of our result is 1. 
Result so far: 9789.1
Subtract 86 from 160 to get 74.
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:
The number 86 fits into 740 8 times, leaving a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 9789.18
Subtract 688 from 740 to 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.

Going ahead to step 9:
520 divided by 86 is 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 9789.186
If we subtract 516 from 520, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
If we divide 40 by 86, we get 0 and a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 9789.186
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 11:
The number 86 fits into 400 4 times, leaving a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 9789.18604
If we subtract 344 from 400, we get 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:
86 goes into 560 6 times with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 9789.186046
Subtracting 516 from 560 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 13:
440 divided by 86 is 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 9789.1860465
If we subtract 430 from 440, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 14:
86 goes into 100 1 times with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 9789.18604651
Subtracting 86 from 100 leaves us 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.

In conclusion, the division gives 9789.18604651 with a balance of 1.4e-08.