213246 divided by 86 
The aim is to understand the frequency of 86 in 213246.

Step 1:
86 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 86

Step 2:
If we divide 21 by 86, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 86

Let's proceed to step 3:
86 goes into 213 2 times with a remainder of 41.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 41 after subtracting 172 from 213.
Append the next digit (2) from the dividend to 41 and continue with: 412 / 86

Going ahead to step 4:
86 can be fit into 412 4 times, resulting in a remainder of 68.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Deduct 344 from 412 and we're left with 68.
Grab the next digit (4) from the dividend, add it to 68, then carry on: 684 / 86

Moving on to step 5:
86 goes into 684 7 times with a remainder of 82.
Put 7 as the next digit of the answer. 
Result so far: 247.0
If we subtract 602 from 684, we get 82.
Include the next digit (6) from the dividend after 82, then repeat: 826 / 86

Advancing to step 6:
86 goes into 826 9 times with a remainder of 52.
Record the quotient 9 as the next digit in the result. 
Result so far: 2479.0
Subtract 774 from 826 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.

Let's proceed to step 7:
The number 86 fits into 520 6 times, leaving a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 2479.6
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.

Going ahead to step 8:
If we divide 40 by 86, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 2479.6
Subtract 0 from 40 to 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.

Advancing to step 9:
86 can be fit into 400 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 2479.604
If we subtract 344 from 400, we 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.

Let's proceed to step 10:
86 can be fit into 560 6 times, resulting in a remainder of 44.
The next digit of our result is 6. 
Result so far: 2479.6046
If we subtract 516 from 560, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 11:
If we divide 440 by 86, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 2479.60465
The remainder is 10 after subtracting 430 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
86 goes into 100 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 2479.604651
Subtracting 86 from 100 leaves us 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 13:
86 goes into 140 1 times with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 2479.6046511
Deduct 86 from 140 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.

The final result is 2479.6046511 with a remainder of 5.4e-07.