875939 divided by 86 
The aim is to understand the frequency of 86 in 875939.

On to step 1:
86 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 86

Let's proceed to step 2:
86 can be fit into 87 1 times, resulting in a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 86 from 87 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 86

Going ahead to step 3:
If we divide 15 by 86, we get 0 and a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 15 after subtracting 0 from 15.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 86

Advancing to step 4:
86 goes into 159 1 times with a remainder of 73.
Write down 1 as next digit of the result. 
Result so far: 101.0
The remainder is 73 after subtracting 86 from 159.
Grab the next digit (3) from the dividend, add it to 73, then carry on: 733 / 86

On to step 5:
When dividing 733 by 86, we get 8 with a remainder of 45.
The number 8 becomes the next digit in our result. 
Result so far: 1018.0
Deduct 688 from 733 and we're left with 45.
Take the next digit (9) from the dividend and append it to 45, then repeat: 459 / 86

Step 6:
86 goes into 459 5 times with a remainder of 29.
The number 5 becomes the next digit in our result. 
Result so far: 10185.0
Deduct 430 from 459 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 7:
86 can be fit into 290 3 times, resulting in a remainder of 32.
The next digit of our result is 3. 
Result so far: 10185.3
Subtracting 258 from 290 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 8:
The number 86 fits into 320 3 times, leaving a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 10185.33
If we take 258 away from 320, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The final result is 10185.33 with a remainder of 0.062.