We're dividing 86143 by 83 
The aim is to understand the frequency of 83 in 86143.

Going ahead to step 1:
83 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 83

Step 2:
The number 83 fits into 86 1 times, leaving a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 3 after subtracting 83 from 86.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 83

Moving on to step 3:
If we divide 31 by 83, we get 0 and a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 31, we end up with 31.
Append the next digit (4) from the dividend to 31 and continue with: 314 / 83

Step 4:
83 goes into 314 3 times with a remainder of 65.
Write down 3 as next digit of the result. 
Result so far: 103.0
If we subtract 249 from 314, we get 65.
Take the next digit (3) from the dividend and append it to 65, then repeat: 653 / 83

Going ahead to step 5:
83 goes into 653 7 times with a remainder of 72.
Write down 7 as next digit of the result. 
Result so far: 1037.0
Subtract 581 from 653 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 6:
83 can be fit into 720 8 times, resulting in a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 1037.8
If we subtract 664 from 720, 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.

Moving on to step 7:
83 goes into 560 6 times with a remainder of 62.
Put 6 as the next digit of the answer. 
Result so far: 1037.86
The remainder is 62 after subtracting 498 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 8:
If we divide 620 by 83, we get 7 and a remainder of 39.
The number 7 becomes the next digit in our result. 
Result so far: 1037.867
If we take 581 away from 620, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 9:
If we divide 390 by 83, we get 4 and a remainder of 58.
Record the quotient 4 as the next digit in the result. 
Result so far: 1037.8674
If we subtract 332 from 390, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 10:
580 divided by 83 is 6 with a remainder of 82.
Write down 6 as next digit of the result. 
Result so far: 1037.86746
Subtracting 498 from 580 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

On to step 11:
83 can be fit into 820 9 times, resulting in a remainder of 73.
Use 9 as the next digit of our solution. 
Result so far: 1037.867469
Subtract 747 from 820 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 12:
The number 83 fits into 730 8 times, leaving a remainder of 66.
Write down 8 as next digit of the result. 
Result so far: 1037.8674698
Deduct 664 from 730 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 13:
83 goes into 660 7 times with a remainder of 79.
Write down 7 as next digit of the result. 
Result so far: 1037.86746987
If we take 581 away from 660, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

The final outcome is 1037.86746987, with a leftover of 7.9e-08.