578316 divided by 86 
The aim is to understand the frequency of 86 in 578316.

Step 1:
86 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 86

Advancing to step 2:
If we divide 57 by 86, we get 0 and a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 57 leaves us with 57.
Grab the next digit (8) from the dividend, add it to 57, then carry on: 578 / 86

Let's proceed to step 3:
The number 86 fits into 578 6 times, leaving a remainder of 62.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 516 from 578, we get 62.
Append the next digit (3) from the dividend to 62 and continue with: 623 / 86

On to step 4:
The number 86 fits into 623 7 times, leaving a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 67.0
If we take 602 away from 623, we end up with 21.
Append the next digit (1) from the dividend to 21 and continue with: 211 / 86

Step 5:
If we divide 211 by 86, we get 2 and a remainder of 39.
Use 2 as the next digit of our solution. 
Result so far: 672.0
Subtract 172 from 211 to get 39.
Bring next digit (6) of the dividend behind the 39 and repeat the process: 396 / 86

Going ahead to step 6:
86 goes into 396 4 times with a remainder of 52.
The number 4 becomes the next digit in our result. 
Result so far: 6724.0
Subtract 344 from 396 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 7:
When dividing 520 by 86, we get 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 6724.6
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.

Let's proceed to step 8:
86 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 6724.6
If we subtract 0 from 40, we get 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 9:
400 divided by 86 is 4 with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 6724.604
Subtracting 344 from 400 leaves us 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.

Step 10:
The number 86 fits into 560 6 times, leaving a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 6724.6046
Subtracting 516 from 560 leaves us 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 11:
440 divided by 86 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 6724.60465
Subtracting 430 from 440 leaves us with 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 12:
If we divide 100 by 86, we get 1 and a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 6724.604651
The remainder is 14 after subtracting 86 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 13:
86 can be fit into 140 1 times, resulting in a remainder of 54.
The next digit of our result is 1. 
Result so far: 6724.6046511
The remainder is 54 after subtracting 86 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final result is 6724.6046511 with a remainder of 5.4e-07.