Let's divide 39942 by 83
The aim is to understand the frequency of 83 in 39942.

On to step 1:
If we divide 3 by 83, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 83

Going ahead to step 2:
83 goes into 39 0 times with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 83

Moving on to step 3:
If we divide 399 by 83, we get 4 and a remainder of 67.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 332 from 399, we get 67.
Fetch the next digit (4) from the dividend, attach it to 67 and continue: 674 / 83

Let's proceed to step 4:
If we divide 674 by 83, we get 8 and a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtracting 664 from 674 leaves us with 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 83

Going ahead to step 5:
The number 83 fits into 102 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 481.0
Deduct 83 from 102 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 6:
When dividing 190 by 83, we get 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 481.2
Subtracting 166 from 190 leaves us 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.

Going ahead to step 7:
83 goes into 240 2 times with a remainder of 74.
The number 2 becomes the next digit in our result. 
Result so far: 481.22
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.

The final result is 481.22 with a remainder of 0.074.