We look at the division of 823216 by 84 
The aim is to understand the frequency of 84 in 823216.

On to step 1:
If we divide 8 by 84, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 84

Going ahead to step 2:
When dividing 82 by 84, we get 0 with a remainder of 82.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 82, we end up with 82.
Append the next digit (3) from the dividend to 82 and continue with: 823 / 84

Advancing to step 3:
If we divide 823 by 84, we get 9 and a remainder of 67.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 67 after subtracting 756 from 823.
Bring next digit (2) of the dividend behind the 67 and repeat the process: 672 / 84

Advancing to step 4:
When dividing 672 by 84, we get 8 with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 98.0
Subtract 672 from 672 to get 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 84

On to step 5:
If we divide 1 by 84, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 980.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 84

Let's proceed to step 6:
84 can be fit into 16 0 times, resulting in a remainder of 16.
The next digit of our result is 0. 
Result so far: 9800.0
Deduct 0 from 16 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
84 goes into 160 1 times with a remainder of 76.
Put 1 as the next digit of the answer. 
Result so far: 9800.1
If we subtract 84 from 160, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 8:
If we divide 760 by 84, we get 9 and a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 9800.19
Subtracting 756 from 760 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
84 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 9800.19
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
84 can be fit into 400 4 times, resulting in a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 9800.1904
The remainder is 64 after subtracting 336 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 11:
If we divide 640 by 84, we get 7 and a remainder of 52.
Use 7 as the next digit of our solution. 
Result so far: 9800.19047
Subtracting 588 from 640 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
84 goes into 520 6 times with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 9800.190476
If we take 504 away from 520, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
160 divided by 84 is 1 with a remainder of 76.
Use 1 as the next digit of our solution. 
Result so far: 9800.1904761
If we take 84 away from 160, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 14:
If we divide 760 by 84, we get 9 and a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 9800.19047619
If we take 756 away from 760, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 9800.19047619, and the remainder is 4e-09.