We look at the division of 420504 by 86 
The aim is to understand the frequency of 86 in 420504.

Moving on to step 1:
86 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 86

Going ahead to step 2:
The number 86 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 86

Going ahead to step 3:
When dividing 420 by 86, we get 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 76 after subtracting 344 from 420.
Include the next digit (5) from the dividend after 76, then repeat: 765 / 86

Let's proceed to step 4:
86 can be fit into 765 8 times, resulting in a remainder of 77.
Put 8 as the next digit of the answer. 
Result so far: 48.0
Deduct 688 from 765 and we're left with 77.
Bring next digit (0) of the dividend behind the 77 and repeat the process: 770 / 86

Advancing to step 5:
86 goes into 770 8 times with a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 488.0
Subtracting 688 from 770 leaves us with 82.
Include the next digit (4) from the dividend after 82, then repeat: 824 / 86

Moving on to step 6:
824 divided by 86 is 9 with a remainder of 50.
The number 9 becomes the next digit in our result. 
Result so far: 4889.0
If we subtract 774 from 824, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
The number 86 fits into 500 5 times, leaving a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 4889.5
Deduct 430 from 500 and we're left 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.

Moving on to step 8:
When dividing 700 by 86, we get 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 4889.58
Deduct 688 from 700 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
If we divide 120 by 86, we get 1 and a remainder of 34.
The next digit of our result is 1. 
Result so far: 4889.581
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:
When dividing 340 by 86, we get 3 with a remainder of 82.
Put 3 as the next digit of the answer. 
Result so far: 4889.5813
If we take 258 away from 340, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 11:
86 goes into 820 9 times with a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 4889.58139
Subtract 774 from 820 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 12:
86 can be fit into 460 5 times, resulting in a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 4889.581395
Subtracting 430 from 460 leaves us 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.

Advancing to step 13:
86 goes into 300 3 times with a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 4889.5813953
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.

On to step 14:
86 can be fit into 420 4 times, resulting in a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 4889.58139534
Deduct 344 from 420 and we're left 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.

Our division results in 4889.58139534 with a remaining 7.6e-08.