We divide 406191 by 86
The aim is to understand the frequency of 86 in 406191.

Moving on to step 1:
The number 86 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 86

Step 2:
The number 86 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Include the next digit (6) from the dividend after 40, then repeat: 406 / 86

Going ahead to step 3:
If we divide 406 by 86, we get 4 and a remainder of 62.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 62 after subtracting 344 from 406.
Bring next digit (1) of the dividend behind the 62 and repeat the process: 621 / 86

On to step 4:
621 divided by 86 is 7 with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Deduct 602 from 621 and we're left with 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 86

Let's proceed to step 5:
199 divided by 86 is 2 with a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 472.0
If we take 172 away from 199, we end up with 27.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 86

Advancing to step 6:
271 divided by 86 is 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 4723.0
If we take 258 away from 271, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
86 goes into 130 1 times with a remainder of 44.
Write down 1 as next digit of the result. 
Result so far: 4723.1
The remainder is 44 after subtracting 86 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 8:
440 divided by 86 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 4723.15
Deduct 430 from 440 and we're left 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.

Moving on to step 9:
When dividing 100 by 86, we get 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 4723.151
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.

Moving on to step 10:
86 can be fit into 140 1 times, resulting in a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 4723.1511
The remainder is 54 after subtracting 86 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 4723.1511 with a remaining 0.00054.