812843 ÷ 84 
The aim is to understand the frequency of 84 in 812843.

On to step 1:
The number 84 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 84

Step 2:
If we divide 81 by 84, we get 0 and a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Take the next digit (2) from the dividend and append it to 81, then repeat: 812 / 84

Let's proceed to step 3:
The number 84 fits into 812 9 times, leaving a remainder of 56.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 756 from 812 to get 56.
Include the next digit (8) from the dividend after 56, then repeat: 568 / 84

Step 4:
When dividing 568 by 84, we get 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 96.0
If we take 504 away from 568, we end up with 64.
Include the next digit (4) from the dividend after 64, then repeat: 644 / 84

On to step 5:
84 can be fit into 644 7 times, resulting in a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 967.0
Subtracting 588 from 644 leaves us with 56.
Grab the next digit (3) from the dividend, add it to 56, then carry on: 563 / 84

Let's proceed to step 6:
84 can be fit into 563 6 times, resulting in a remainder of 59.
Use 6 as the next digit of our solution. 
Result so far: 9676.0
Subtracting 504 from 563 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 7:
If we divide 590 by 84, we get 7 and a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 9676.7
Subtracting 588 from 590 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
If we divide 20 by 84, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 9676.7
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
When dividing 200 by 84, we get 2 with a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 9676.702
Deduct 168 from 200 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 10:
320 divided by 84 is 3 with a remainder of 68.
Put 3 as the next digit of the answer. 
Result so far: 9676.7023
If we subtract 252 from 320, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 11:
When dividing 680 by 84, we get 8 with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 9676.70238
If we subtract 672 from 680, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
84 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 9676.70238
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 13:
If we divide 800 by 84, we get 9 and a remainder of 44.
The number 9 becomes the next digit in our result. 
Result so far: 9676.7023809
Deduct 756 from 800 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 14:
When dividing 440 by 84, we get 5 with a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 9676.70238095
Deduct 420 from 440 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 9676.70238095 and a remainder of 2e-08.