We divide 827304 by 81
The aim is to understand the frequency of 81 in 827304.

Going ahead to step 1:
81 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 81

Advancing to step 2:
When dividing 82 by 81, we get 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 81 from 82, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 81

Moving on to step 3:
81 can be fit into 17 0 times, resulting in a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 17 to get 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 81

On to step 4:
81 goes into 173 2 times with a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
The remainder is 11 after subtracting 162 from 173.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 81

Advancing to step 5:
When dividing 110 by 81, we get 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 1021.0
Deduct 81 from 110 and we're left with 29.
Fetch the next digit (4) from the dividend, attach it to 29 and continue: 294 / 81

Advancing to step 6:
81 can be fit into 294 3 times, resulting in a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 10213.0
Subtracting 243 from 294 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 7:
When dividing 510 by 81, we get 6 with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 10213.6
The remainder is 24 after subtracting 486 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 8:
81 can be fit into 240 2 times, resulting in a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 10213.62
If we subtract 162 from 240, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 9:
The number 81 fits into 780 9 times, leaving a remainder of 51.
The number 9 becomes the next digit in our result. 
Result so far: 10213.629
Deduct 729 from 780 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Step 10:
The number 81 fits into 510 6 times, leaving a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 10213.6296
Subtracting 486 from 510 leaves us 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.

On to step 11:
If we divide 240 by 81, we get 2 and a remainder of 78.
The next digit of our result is 2. 
Result so far: 10213.62962
The remainder is 78 after subtracting 162 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 12:
81 can be fit into 780 9 times, resulting in a remainder of 51.
Put 9 as the next digit of the answer. 
Result so far: 10213.629629
The remainder is 51 after subtracting 729 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 13:
81 goes into 510 6 times with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 10213.6296296
The remainder is 24 after subtracting 486 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 14:
When dividing 240 by 81, we get 2 with a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 10213.62962962
If we subtract 162 from 240, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

After the division, we end up with 10213.62962962 and a remainder of 7.8e-08.