We look at the division of 751235 by 86 
The aim is to understand the frequency of 86 in 751235.

Advancing to step 1:
The number 86 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 86

Let's proceed to step 2:
When dividing 75 by 86, we get 0 with a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 75 after subtracting 0 from 75.
Bring next digit (1) of the dividend behind the 75 and repeat the process: 751 / 86

Moving on to step 3:
86 goes into 751 8 times with a remainder of 63.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 63 after subtracting 688 from 751.
Fetch the next digit (2) from the dividend, attach it to 63 and continue: 632 / 86

Advancing to step 4:
The number 86 fits into 632 7 times, leaving a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 87.0
The remainder is 30 after subtracting 602 from 632.
Fetch the next digit (3) from the dividend, attach it to 30 and continue: 303 / 86

Let's proceed to step 5:
If we divide 303 by 86, we get 3 and a remainder of 45.
The next digit of our result is 3. 
Result so far: 873.0
Subtracting 258 from 303 leaves us with 45.
Append the next digit (5) from the dividend to 45 and continue with: 455 / 86

Step 6:
86 can be fit into 455 5 times, resulting in a remainder of 25.
The next digit of our result is 5. 
Result so far: 8735.0
If we take 430 away from 455, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
86 goes into 250 2 times with a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 8735.2
Subtracting 172 from 250 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 8:
86 goes into 780 9 times with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 8735.29
Subtract 774 from 780 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
When dividing 60 by 86, we get 0 with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 8735.29
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 10:
86 goes into 600 6 times with a remainder of 84.
The number 6 becomes the next digit in our result. 
Result so far: 8735.2906
If we subtract 516 from 600, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 11:
86 can be fit into 840 9 times, resulting in a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 8735.29069
If we take 774 away from 840, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 12:
660 divided by 86 is 7 with a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 8735.290697
Subtracting 602 from 660 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 13:
580 divided by 86 is 6 with a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 8735.2906976
If we take 516 away from 580, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 14:
The number 86 fits into 640 7 times, leaving a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 8735.29069767
If we subtract 602 from 640, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 8735.29069767 with a remaining 3.8e-08.