We're dividing 821849 by 84 
The aim is to understand the frequency of 84 in 821849.

Let's proceed to step 1:
When dividing 8 by 84, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 84

On to step 2:
82 divided by 84 is 0 with a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 82, we get 82.
Append the next digit (1) from the dividend to 82 and continue with: 821 / 84

Going ahead to step 3:
84 can be fit into 821 9 times, resulting in a remainder of 65.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 756 from 821, we get 65.
Include the next digit (8) from the dividend after 65, then repeat: 658 / 84

Going ahead to step 4:
When dividing 658 by 84, we get 7 with a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 97.0
If we subtract 588 from 658, we get 70.
Include the next digit (4) from the dividend after 70, then repeat: 704 / 84

Step 5:
704 divided by 84 is 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 978.0
If we take 672 away from 704, we end up with 32.
Fetch the next digit (9) from the dividend, attach it to 32 and continue: 329 / 84

Going ahead to step 6:
If we divide 329 by 84, we get 3 and a remainder of 77.
The number 3 becomes the next digit in our result. 
Result so far: 9783.0
Deduct 252 from 329 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 7:
When dividing 770 by 84, we get 9 with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 9783.9
Deduct 756 from 770 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 8:
The number 84 fits into 140 1 times, leaving a remainder of 56.
Use 1 as the next digit of our solution. 
Result so far: 9783.91
Deduct 84 from 140 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
560 divided by 84 is 6 with a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 9783.916
Deduct 504 from 560 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 10:
When dividing 560 by 84, we get 6 with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 9783.9166
The remainder is 56 after subtracting 504 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The quotient of the division is 9783.9166, and the remainder is 0.00056.