810399 ÷ 27 
We want to divide 810399 by 27.

Let's proceed to step 1:
If we divide 8 by 27, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 27

Going ahead to step 2:
27 goes into 81 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 81 from 81 and we're left with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 27

On to step 3:
If we divide 0 by 27, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Subtract 0 from 0 to get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 27

On to step 4:
If we divide 3 by 27, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 300.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 27

Step 5:
27 can be fit into 39 1 times, resulting in a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 3001.0
Subtract 27 from 39 to get 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 27

Advancing to step 6:
129 divided by 27 is 4 with a remainder of 21.
Put 4 as the next digit of the answer. 
Result so far: 30014.0
The remainder is 21 after subtracting 108 from 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
210 divided by 27 is 7 with a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 30014.7
If we subtract 189 from 210, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 8:
210 divided by 27 is 7 with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 30014.77
Deduct 189 from 210 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

In conclusion, the division gives 30014.77 with a balance of 0.021.