We're dividing 4038359 by 86 
The aim is to understand the frequency of 86 in 4038359.

Step 1:
86 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 86

Moving on to step 2:
If we divide 40 by 86, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 86

Let's proceed to step 3:
86 can be fit into 403 4 times, resulting in a remainder of 59.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 344 from 403 to get 59.
Append the next digit (8) from the dividend to 59 and continue with: 598 / 86

Going ahead to step 4:
The number 86 fits into 598 6 times, leaving a remainder of 82.
Use 6 as the next digit of our solution. 
Result so far: 46.0
If we subtract 516 from 598, we get 82.
Take the next digit (3) from the dividend and append it to 82, then repeat: 823 / 86

Going ahead to step 5:
If we divide 823 by 86, we get 9 and a remainder of 49.
Put 9 as the next digit of the answer. 
Result so far: 469.0
Subtracting 774 from 823 leaves us with 49.
Include the next digit (5) from the dividend after 49, then repeat: 495 / 86

Going ahead to step 6:
86 can be fit into 495 5 times, resulting in a remainder of 65.
The next digit of our result is 5. 
Result so far: 4695.0
Subtracting 430 from 495 leaves us with 65.
Append the next digit (9) from the dividend to 65 and continue with: 659 / 86

Advancing to step 7:
86 can be fit into 659 7 times, resulting in a remainder of 57.
The number 7 becomes the next digit in our result. 
Result so far: 46957.0
Subtract 602 from 659 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 8:
86 goes into 570 6 times with a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 46957.6
Deduct 516 from 570 and we're left 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.

On to step 9:
86 goes into 540 6 times with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 46957.66
If we subtract 516 from 540, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 46957.66 and a remainder of 0.024.