We're dividing 861066 by 83 
The aim is to understand the frequency of 83 in 861066.

Let's proceed to step 1:
The number 83 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 83

On to step 2:
83 can be fit into 86 1 times, resulting in a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 83 from 86 to get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 83

On to step 3:
When dividing 31 by 83, we get 0 with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we take 0 away from 31, we end up with 31.
Include the next digit (0) from the dividend after 31, then repeat: 310 / 83

Going ahead to step 4:
When dividing 310 by 83, we get 3 with a remainder of 61.
Record the quotient 3 as the next digit in the result. 
Result so far: 103.0
Subtracting 249 from 310 leaves us with 61.
Include the next digit (6) from the dividend after 61, then repeat: 616 / 83

Advancing to step 5:
When dividing 616 by 83, we get 7 with a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 1037.0
Subtracting 581 from 616 leaves us with 35.
Include the next digit (6) from the dividend after 35, then repeat: 356 / 83

Moving on to step 6:
83 goes into 356 4 times with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 10374.0
If we take 332 away from 356, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 7:
83 can be fit into 240 2 times, resulting in a remainder of 74.
Write down 2 as next digit of the result. 
Result so far: 10374.2
If we subtract 166 from 240, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 8:
When dividing 740 by 83, we get 8 with a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 10374.28
If we take 664 away from 740, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 9:
When dividing 760 by 83, we get 9 with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 10374.289
If we subtract 747 from 760, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 10:
130 divided by 83 is 1 with a remainder of 47.
Put 1 as the next digit of the answer. 
Result so far: 10374.2891
Deduct 83 from 130 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 11:
The number 83 fits into 470 5 times, leaving a remainder of 55.
The next digit of our result is 5. 
Result so far: 10374.28915
The remainder is 55 after subtracting 415 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 12:
The number 83 fits into 550 6 times, leaving a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 10374.289156
Deduct 498 from 550 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 13:
83 goes into 520 6 times with a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 10374.2891566
Subtracting 498 from 520 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 10374.2891566, with a leftover of 2.2e-07.