813447 divided by 84 
The aim is to understand the frequency of 84 in 813447.

Advancing to step 1:
8 divided by 84 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 84

Going ahead to step 2:
84 goes into 81 0 times with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Include the next digit (3) from the dividend after 81, then repeat: 813 / 84

On to step 3:
84 can be fit into 813 9 times, resulting in a remainder of 57.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 756 from 813 to get 57.
Include the next digit (4) from the dividend after 57, then repeat: 574 / 84

Going ahead to step 4:
When dividing 574 by 84, we get 6 with a remainder of 70.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
If we take 504 away from 574, we end up with 70.
Include the next digit (4) from the dividend after 70, then repeat: 704 / 84

Let's proceed to step 5:
If we divide 704 by 84, we get 8 and a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 968.0
If we subtract 672 from 704, we get 32.
Append the next digit (7) from the dividend to 32 and continue with: 327 / 84

Moving on to step 6:
When dividing 327 by 84, we get 3 with a remainder of 75.
Put 3 as the next digit of the answer. 
Result so far: 9683.0
The remainder is 75 after subtracting 252 from 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 7:
The number 84 fits into 750 8 times, leaving a remainder of 78.
The next digit of our result is 8. 
Result so far: 9683.8
If we take 672 away from 750, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 8:
If we divide 780 by 84, we get 9 and a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 9683.89
Deduct 756 from 780 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
When dividing 240 by 84, we get 2 with a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 9683.892
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 10:
The number 84 fits into 720 8 times, leaving a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 9683.8928
If we take 672 away from 720, we end up 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.

On to step 11:
If we divide 480 by 84, we get 5 and a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 9683.89285
If we subtract 420 from 480, we 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.

Let's proceed to step 12:
When dividing 600 by 84, we get 7 with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 9683.892857
If we take 588 away from 600, we end up 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.

Step 13:
When dividing 120 by 84, we get 1 with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 9683.8928571
Subtracting 84 from 120 leaves us 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.

Step 14:
If we divide 360 by 84, we get 4 and a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 9683.89285714
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.

The final result is 9683.89285714 with a remainder of 2.4e-08.