812664 ÷ 81 
We want to divide 812664 by 81.

Let's proceed to step 1:
The number 81 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 81

On to step 2:
81 can be fit into 81 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 81 from 81 and we're left with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 81

Moving on to step 3:
81 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 81

Moving on to step 4:
The number 81 fits into 26 0 times, leaving a remainder of 26.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
Deduct 0 from 26 and we're left with 26.
Grab the next digit (6) from the dividend, add it to 26, then carry on: 266 / 81

Let's proceed to step 5:
266 divided by 81 is 3 with a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 1003.0
Deduct 243 from 266 and we're left with 23.
Bring next digit (4) of the dividend behind the 23 and repeat the process: 234 / 81

Let's proceed to step 6:
234 divided by 81 is 2 with a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 10032.0
If we subtract 162 from 234, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 7:
If we divide 720 by 81, we get 8 and a remainder of 72.
The next digit of our result is 8. 
Result so far: 10032.8
Subtracting 648 from 720 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 8:
720 divided by 81 is 8 with a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 10032.88
Subtracting 648 from 720 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 10032.88 with a remaining 0.072.