We're dividing 20205 by 84 
The aim is to understand the frequency of 84 in 20205.

On to step 1:
The number 84 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 84

Advancing to step 2:
84 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 84

Moving on to step 3:
The number 84 fits into 202 2 times, leaving a remainder of 34.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 168 from 202 leaves us with 34.
Grab the next digit (0) from the dividend, add it to 34, then carry on: 340 / 84

Going ahead to step 4:
If we divide 340 by 84, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 24.0
Subtracting 336 from 340 leaves us with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 84

Step 5:
If we divide 45 by 84, we get 0 and a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 240.0
If we subtract 0 from 45, 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.

Moving on to step 6:
If we divide 450 by 84, we get 5 and a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 240.5
If we take 420 away from 450, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
When dividing 300 by 84, we get 3 with a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 240.53
Deduct 252 from 300 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 8:
The number 84 fits into 480 5 times, leaving a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 240.535
The remainder is 60 after subtracting 420 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
84 goes into 600 7 times with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 240.5357
Deduct 588 from 600 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
84 can be fit into 120 1 times, resulting in a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 240.53571
If we take 84 away from 120, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
360 divided by 84 is 4 with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 240.535714
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 12:
The number 84 fits into 240 2 times, leaving a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 240.5357142
If we take 168 away from 240, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 13:
If we divide 720 by 84, we get 8 and a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 240.53571428
Subtract 672 from 720 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Our division results in 240.53571428 with a remaining 4.8e-08.