We look at the division of 816174 by 83 
The aim is to understand the frequency of 83 in 816174.

On to step 1:
83 can be fit into 8 0 times, resulting in 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.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 83

Going ahead to step 2:
The number 83 fits into 81 0 times, leaving a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 83

On to step 3:
83 can be fit into 816 9 times, resulting in a remainder of 69.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 747 from 816 and we're left with 69.
Append the next digit (1) from the dividend to 69 and continue with: 691 / 83

Step 4:
The number 83 fits into 691 8 times, leaving a remainder of 27.
Use 8 as the next digit of our solution. 
Result so far: 98.0
Subtracting 664 from 691 leaves us with 27.
Take the next digit (7) from the dividend and append it to 27, then repeat: 277 / 83

Advancing to step 5:
83 goes into 277 3 times with a remainder of 28.
Write down 3 as next digit of the result. 
Result so far: 983.0
Subtracting 249 from 277 leaves us with 28.
Include the next digit (4) from the dividend after 28, then repeat: 284 / 83

Going ahead to step 6:
83 can be fit into 284 3 times, resulting in a remainder of 35.
The next digit of our result is 3. 
Result so far: 9833.0
Subtracting 249 from 284 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 7:
83 goes into 350 4 times with a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 9833.4
Subtract 332 from 350 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
The number 83 fits into 180 2 times, leaving a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 9833.42
Deduct 166 from 180 and we're left 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.

Let's proceed to step 9:
83 goes into 140 1 times with a remainder of 57.
Use 1 as the next digit of our solution. 
Result so far: 9833.421
If we take 83 away from 140, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 10:
When dividing 570 by 83, we get 6 with a remainder of 72.
The next digit of our result is 6. 
Result so far: 9833.4216
Subtracting 498 from 570 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 11:
If we divide 720 by 83, we get 8 and a remainder of 56.
The next digit of our result is 8. 
Result so far: 9833.42168
Subtracting 664 from 720 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.

On to step 12:
83 can be fit into 560 6 times, resulting in a remainder of 62.
Record the quotient 6 as the next digit in the result. 
Result so far: 9833.421686
Deduct 498 from 560 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 13:
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: 9833.4216867
The remainder is 39 after subtracting 581 from 620.
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 14:
83 goes into 390 4 times with a remainder of 58.
Record the quotient 4 as the next digit in the result. 
Result so far: 9833.42168674
Deduct 332 from 390 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final outcome is 9833.42168674, with a leftover of 5.8e-08.