We're dividing 752531 by 86 
The aim is to understand the frequency of 86 in 752531.

Going ahead to step 1:
If we divide 7 by 86, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
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

On to step 2:
86 can be fit into 75 0 times, resulting in a remainder of 75.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Append the next digit (2) from the dividend to 75 and continue with: 752 / 86

Going ahead to step 3:
If we divide 752 by 86, we get 8 and a remainder of 64.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 688 from 752 leaves us with 64.
Bring next digit (5) of the dividend behind the 64 and repeat the process: 645 / 86

Let's proceed to step 4:
86 goes into 645 7 times with a remainder of 43.
The next digit of our result is 7. 
Result so far: 87.0
If we take 602 away from 645, we end up with 43.
Grab the next digit (3) from the dividend, add it to 43, then carry on: 433 / 86

Moving on to step 5:
86 can be fit into 433 5 times, resulting in a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 875.0
Subtract 430 from 433 to get 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 86

Moving on to step 6:
The number 86 fits into 31 0 times, leaving a remainder of 31.
The next digit of our result is 0. 
Result so far: 8750.0
Deduct 0 from 31 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 7:
When dividing 310 by 86, we get 3 with a remainder of 52.
The number 3 becomes the next digit in our result. 
Result so far: 8750.3
If we take 258 away from 310, we end up with 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 8:
If we divide 520 by 86, we get 6 and a remainder of 4.
The next digit of our result is 6. 
Result so far: 8750.36
Subtracting 516 from 520 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
40 divided by 86 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 8750.36
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 10:
If we divide 400 by 86, we get 4 and a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 8750.3604
Subtract 344 from 400 to 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.

Advancing to step 11:
86 can be fit into 560 6 times, resulting in a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 8750.36046
If we take 516 away from 560, we end up 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.

On to step 12:
When dividing 440 by 86, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 8750.360465
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.

On to step 13:
The number 86 fits into 100 1 times, leaving a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 8750.3604651
Deduct 86 from 100 and we're left 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.

Step 14:
The number 86 fits into 140 1 times, leaving a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 8750.36046511
Subtract 86 from 140 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The quotient of the division is 8750.36046511, and the remainder is 5.4e-08.