We're dividing 159371 by 83 
The aim is to understand the frequency of 83 in 159371.

Going ahead to step 1:
When dividing 1 by 83, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 83

Let's proceed to step 2:
15 divided by 83 is 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 83

Advancing to step 3:
159 divided by 83 is 1 with a remainder of 76.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 83 from 159, we get 76.
Grab the next digit (3) from the dividend, add it to 76, then carry on: 763 / 83

Step 4:
If we divide 763 by 83, we get 9 and a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 747 from 763, we get 16.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 83

Let's proceed to step 5:
When dividing 167 by 83, we get 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 192.0
Subtracting 166 from 167 leaves us with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 83

On to step 6:
11 divided by 83 is 0 with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 1920.0
Deduct 0 from 11 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
If we divide 110 by 83, we get 1 and a remainder of 27.
Write down 1 as next digit of the result. 
Result so far: 1920.1
If we subtract 83 from 110, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 8:
83 can be fit into 270 3 times, resulting in a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 1920.13
If we take 249 away from 270, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 9:
If we divide 210 by 83, we get 2 and a remainder of 44.
Record the quotient 2 as the next digit in the result. 
Result so far: 1920.132
Subtracting 166 from 210 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 10:
83 can be fit into 440 5 times, resulting in a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1920.1325
Deduct 415 from 440 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 11:
If we divide 250 by 83, we get 3 and a remainder of 1.
The next digit of our result is 3. 
Result so far: 1920.13253
Deduct 249 from 250 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 12:
10 divided by 83 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 1920.13253
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
The number 83 fits into 100 1 times, leaving a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1920.1325301
If we subtract 83 from 100, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 14:
When dividing 170 by 83, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 1920.13253012
Subtract 166 from 170 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 1920.13253012 and a remainder of 4e-09.