We look at the division of 186571 by 83 
The aim is to understand the frequency of 83 in 186571.

Going ahead to step 1:
When dividing 1 by 83, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 83

Going ahead to step 2:
The number 83 fits into 18 0 times, leaving a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Include the next digit (6) from the dividend after 18, then repeat: 186 / 83

On to step 3:
When dividing 186 by 83, we get 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 20 after subtracting 166 from 186.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 83

Moving on to step 4:
If we divide 205 by 83, we get 2 and a remainder of 39.
The next digit of our result is 2. 
Result so far: 22.0
Subtract 166 from 205 to get 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 83

Let's proceed to step 5:
83 can be fit into 397 4 times, resulting in a remainder of 65.
The number 4 becomes the next digit in our result. 
Result so far: 224.0
Deduct 332 from 397 and we're left with 65.
Append the next digit (1) from the dividend to 65 and continue with: 651 / 83

Let's proceed to step 6:
The number 83 fits into 651 7 times, leaving a remainder of 70.
The next digit of our result is 7. 
Result so far: 2247.0
Subtracting 581 from 651 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 7:
When dividing 700 by 83, we get 8 with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 2247.8
Subtract 664 from 700 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 8:
The number 83 fits into 360 4 times, leaving a remainder of 28.
The next digit of our result is 4. 
Result so far: 2247.84
If we subtract 332 from 360, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 9:
83 can be fit into 280 3 times, resulting in a remainder of 31.
The next digit of our result is 3. 
Result so far: 2247.843
Subtract 249 from 280 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 10:
If we divide 310 by 83, we get 3 and a remainder of 61.
The number 3 becomes the next digit in our result. 
Result so far: 2247.8433
Deduct 249 from 310 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

The final result is 2247.8433 with a remainder of 0.00061.