We're dividing 879252 by 86 
The aim is to understand the frequency of 86 in 879252.

Advancing to step 1:
The number 86 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 86

Advancing to step 2:
87 divided by 86 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 86 from 87 to get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 86

Step 3:
When dividing 19 by 86, we get 0 with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 19, we end up with 19.
Append the next digit (2) from the dividend to 19 and continue with: 192 / 86

Going ahead to step 4:
86 can be fit into 192 2 times, resulting in a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 102.0
Deduct 172 from 192 and we're left with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 86

On to step 5:
The number 86 fits into 205 2 times, leaving a remainder of 33.
The next digit of our result is 2. 
Result so far: 1022.0
The remainder is 33 after subtracting 172 from 205.
Take the next digit (2) from the dividend and append it to 33, then repeat: 332 / 86

On to step 6:
When dividing 332 by 86, we get 3 with a remainder of 74.
Use 3 as the next digit of our solution. 
Result so far: 10223.0
Subtracting 258 from 332 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 7:
When dividing 740 by 86, we get 8 with a remainder of 52.
The next digit of our result is 8. 
Result so far: 10223.8
Subtracting 688 from 740 leaves us 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.

Let's proceed to step 8:
86 can be fit into 520 6 times, resulting in a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 10223.86
If we subtract 516 from 520, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
86 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 10223.86
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.

Let's proceed to step 10:
86 goes into 400 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 10223.8604
If we take 344 away from 400, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
If we divide 560 by 86, we get 6 and a remainder of 44.
The next digit of our result is 6. 
Result so far: 10223.86046
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.

Advancing to step 12:
When dividing 440 by 86, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 10223.860465
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.

Moving on to step 13:
100 divided by 86 is 1 with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 10223.8604651
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:
86 goes into 140 1 times with a remainder of 54.
Put 1 as the next digit of the answer. 
Result so far: 10223.86046511
Subtracting 86 from 140 leaves us with 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 10223.86046511, and the remainder is 5.4e-08.