We look at the division of 72645 by 83 
The aim is to understand the frequency of 83 in 72645.

Let's proceed to step 1:
The number 83 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 83

Let's proceed to step 2:
If we divide 72 by 83, we get 0 and a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Include the next digit (6) from the dividend after 72, then repeat: 726 / 83

On to step 3:
83 can be fit into 726 8 times, resulting in a remainder of 62.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 664 from 726 to get 62.
Include the next digit (4) from the dividend after 62, then repeat: 624 / 83

Moving on to step 4:
83 goes into 624 7 times with a remainder of 43.
Use 7 as the next digit of our solution. 
Result so far: 87.0
Subtracting 581 from 624 leaves us with 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 83

On to step 5:
83 can be fit into 435 5 times, resulting in a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 875.0
The remainder is 20 after subtracting 415 from 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 6:
When dividing 200 by 83, we get 2 with a remainder of 34.
The next digit of our result is 2. 
Result so far: 875.2
The remainder is 34 after subtracting 166 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 7:
83 goes into 340 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 875.24
Subtract 332 from 340 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
83 goes into 80 0 times with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 875.24
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 9:
The number 83 fits into 800 9 times, leaving a remainder of 53.
Record the quotient 9 as the next digit in the result. 
Result so far: 875.2409
If we subtract 747 from 800, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 10:
83 goes into 530 6 times with a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 875.24096
Deduct 498 from 530 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 11:
The number 83 fits into 320 3 times, leaving a remainder of 71.
Use 3 as the next digit of our solution. 
Result so far: 875.240963
Subtract 249 from 320 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 12:
710 divided by 83 is 8 with a remainder of 46.
The next digit of our result is 8. 
Result so far: 875.2409638
If we subtract 664 from 710, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
460 divided by 83 is 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 875.24096385
If we subtract 415 from 460, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Our division results in 875.24096385 with a remaining 4.5e-08.