We're dividing 258102 by 83 
The aim is to understand the frequency of 83 in 258102.

On to step 1:
83 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 83

Step 2:
25 divided by 83 is 0 with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Include the next digit (8) from the dividend after 25, then repeat: 258 / 83

Moving on to step 3:
83 goes into 258 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 9 after subtracting 249 from 258.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 83

Step 4:
If we divide 91 by 83, we get 1 and a remainder of 8.
The next digit of our result is 1. 
Result so far: 31.0
If we subtract 83 from 91, we get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 83

Going ahead to step 5:
80 divided by 83 is 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 310.0
Subtract 0 from 80 to get 80.
Grab the next digit (2) from the dividend, add it to 80, then carry on: 802 / 83

Let's proceed to step 6:
802 divided by 83 is 9 with a remainder of 55.
The number 9 becomes the next digit in our result. 
Result so far: 3109.0
If we subtract 747 from 802, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 7:
550 divided by 83 is 6 with a remainder of 52.
The next digit of our result is 6. 
Result so far: 3109.6
If we take 498 away from 550, we end up 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.

Step 8:
83 can be fit into 520 6 times, resulting in a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 3109.66
Deduct 498 from 520 and we're left 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 quotient of the division is 3109.66, and the remainder is 0.022.