We look at the division of 320505 by 84 
The aim is to understand the frequency of 84 in 320505.

Advancing to step 1:
If we divide 3 by 84, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 84

Going ahead to step 2:
84 goes into 32 0 times with a remainder of 32.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 32 after subtracting 0 from 32.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 84

On to step 3:
84 can be fit into 320 3 times, resulting in a remainder of 68.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 252 from 320 and we're left with 68.
Fetch the next digit (5) from the dividend, attach it to 68 and continue: 685 / 84

Going ahead to step 4:
84 can be fit into 685 8 times, resulting in a remainder of 13.
Use 8 as the next digit of our solution. 
Result so far: 38.0
The remainder is 13 after subtracting 672 from 685.
Include the next digit (0) from the dividend after 13, then repeat: 130 / 84

On to step 5:
When dividing 130 by 84, we get 1 with a remainder of 46.
The number 1 becomes the next digit in our result. 
Result so far: 381.0
If we take 84 away from 130, we end up with 46.
Include the next digit (5) from the dividend after 46, then repeat: 465 / 84

On to step 6:
The number 84 fits into 465 5 times, leaving a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 3815.0
The remainder is 45 after subtracting 420 from 465.
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 7:
450 divided by 84 is 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 3815.5
Deduct 420 from 450 and we're left 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.

Advancing to step 8:
84 goes into 300 3 times with a remainder of 48.
The next digit of our result is 3. 
Result so far: 3815.53
Subtract 252 from 300 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.

On to step 9:
84 can be fit into 480 5 times, resulting in a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 3815.535
Subtract 420 from 480 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 10:
600 divided by 84 is 7 with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 3815.5357
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.

Let's proceed to step 11:
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: 3815.53571
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 12:
84 can be fit into 360 4 times, resulting in a remainder of 24.
The next digit of our result is 4. 
Result so far: 3815.535714
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 13:
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: 3815.5357142
If we subtract 168 from 240, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 14:
720 divided by 84 is 8 with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 3815.53571428
Subtracting 672 from 720 leaves us 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.

The final outcome is 3815.53571428, with a leftover of 4.8e-08.