We divide 799217 by 81
The aim is to understand the frequency of 81 in 799217.

On to step 1:
81 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 81

On to step 2:
81 goes into 79 0 times with a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Bring next digit (9) of the dividend behind the 79 and repeat the process: 799 / 81

Advancing to step 3:
The number 81 fits into 799 9 times, leaving a remainder of 70.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 729 from 799 leaves us with 70.
Fetch the next digit (2) from the dividend, attach it to 70 and continue: 702 / 81

Going ahead to step 4:
81 goes into 702 8 times with a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 98.0
If we subtract 648 from 702, we get 54.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 81

Advancing to step 5:
When dividing 541 by 81, we get 6 with a remainder of 55.
Use 6 as the next digit of our solution. 
Result so far: 986.0
Subtract 486 from 541 to get 55.
Fetch the next digit (7) from the dividend, attach it to 55 and continue: 557 / 81

On to step 6:
81 can be fit into 557 6 times, resulting in a remainder of 71.
The number 6 becomes the next digit in our result. 
Result so far: 9866.0
The remainder is 71 after subtracting 486 from 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 7:
The number 81 fits into 710 8 times, leaving a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 9866.8
Subtracting 648 from 710 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 8:
When dividing 620 by 81, we get 7 with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 9866.87
Subtracting 567 from 620 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 9:
530 divided by 81 is 6 with a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 9866.876
Subtract 486 from 530 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 10:
If we divide 440 by 81, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 9866.8765
The remainder is 35 after subtracting 405 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 11:
The number 81 fits into 350 4 times, leaving a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 9866.87654
Subtract 324 from 350 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 12:
If we divide 260 by 81, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 9866.876543
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 13:
When dividing 170 by 81, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 9866.8765432
If we subtract 162 from 170, 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.

Moving on to step 14:
81 can be fit into 80 0 times, resulting in a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 9866.8765432
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.

The final outcome is 9866.8765432, with a leftover of 8e-08.