72821861 divided by 84 
The aim is to understand the frequency of 84 in 72821861.

Going ahead to step 1:
7 divided by 84 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 84

Advancing to step 2:
The number 84 fits into 72 0 times, leaving a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (8) of the dividend behind the 72 and repeat the process: 728 / 84

Step 3:
The number 84 fits into 728 8 times, leaving a remainder of 56.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 672 from 728, we get 56.
Append the next digit (2) from the dividend to 56 and continue with: 562 / 84

Moving on to step 4:
84 can be fit into 562 6 times, resulting in a remainder of 58.
The next digit of our result is 6. 
Result so far: 86.0
Deduct 504 from 562 and we're left with 58.
Include the next digit (1) from the dividend after 58, then repeat: 581 / 84

Going ahead to step 5:
If we divide 581 by 84, we get 6 and a remainder of 77.
The next digit of our result is 6. 
Result so far: 866.0
If we subtract 504 from 581, we get 77.
Include the next digit (8) from the dividend after 77, then repeat: 778 / 84

Step 6:
If we divide 778 by 84, we get 9 and a remainder of 22.
Record the quotient 9 as the next digit in the result. 
Result so far: 8669.0
If we take 756 away from 778, we end up with 22.
Append the next digit (6) from the dividend to 22 and continue with: 226 / 84

Going ahead to step 7:
When dividing 226 by 84, we get 2 with a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 86692.0
Deduct 168 from 226 and we're left with 58.
Bring next digit (1) of the dividend behind the 58 and repeat the process: 581 / 84

On to step 8:
84 can be fit into 581 6 times, resulting in a remainder of 77.
The next digit of our result is 6. 
Result so far: 866926.0
Subtracting 504 from 581 leaves us 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.

On to step 9:
84 can be fit into 770 9 times, resulting in a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 866926.9
If we take 756 away from 770, we end up 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 10:
If we divide 140 by 84, we get 1 and a remainder of 56.
The number 1 becomes the next digit in our result. 
Result so far: 866926.91
If we take 84 away from 140, we end up 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 11:
84 can be fit into 560 6 times, resulting in a remainder of 56.
Put 6 as the next digit of the answer. 
Result so far: 866926.916
If we subtract 504 from 560, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 12:
84 can be fit into 560 6 times, resulting in a remainder of 56.
Put 6 as the next digit of the answer. 
Result so far: 866926.9166
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.

In conclusion, the division gives 866926.9166 with a balance of 0.00056.