We look at the division of 754463 by 86 
The aim is to understand the frequency of 86 in 754463.

Advancing to step 1:
86 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 86

Advancing to step 2:
When dividing 75 by 86, we get 0 with a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Bring next digit (4) of the dividend behind the 75 and repeat the process: 754 / 86

On to step 3:
754 divided by 86 is 8 with a remainder of 66.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 688 from 754 to get 66.
Grab the next digit (4) from the dividend, add it to 66, then carry on: 664 / 86

Step 4:
If we divide 664 by 86, we get 7 and a remainder of 62.
Use 7 as the next digit of our solution. 
Result so far: 87.0
The remainder is 62 after subtracting 602 from 664.
Bring next digit (6) of the dividend behind the 62 and repeat the process: 626 / 86

Going ahead to step 5:
If we divide 626 by 86, we get 7 and a remainder of 24.
Put 7 as the next digit of the answer. 
Result so far: 877.0
Subtract 602 from 626 to get 24.
Take the next digit (3) from the dividend and append it to 24, then repeat: 243 / 86

Let's proceed to step 6:
When dividing 243 by 86, we get 2 with a remainder of 71.
Record the quotient 2 as the next digit in the result. 
Result so far: 8772.0
Subtracting 172 from 243 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 7:
When dividing 710 by 86, we get 8 with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 8772.8
The remainder is 22 after subtracting 688 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
220 divided by 86 is 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 8772.82
If we subtract 172 from 220, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
86 goes into 480 5 times with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 8772.825
The remainder is 50 after subtracting 430 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
86 goes into 500 5 times with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 8772.8255
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 8772.8255 with a remainder of 0.0007.