80816021 ÷ 797 
Our goal is to divide 80816021 by 797.

Going ahead to step 1:
8 divided by 797 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 797

Going ahead to step 2:
The number 797 fits into 80 0 times, leaving a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Take the next digit (8) from the dividend and append it to 80, then repeat: 808 / 797

Moving on to step 3:
797 goes into 808 1 times with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 797 from 808, we get 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 797

On to step 4:
111 divided by 797 is 0 with a remainder of 111.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 111, we end up with 111.
Append the next digit (6) from the dividend to 111 and continue with: 1116 / 797

Advancing to step 5:
If we divide 1116 by 797, we get 1 and a remainder of 319.
The next digit of our result is 1. 
Result so far: 101.0
Subtract 797 from 1116 to get 319.
Fetch the next digit (0) from the dividend, attach it to 319 and continue: 3190 / 797

On to step 6:
797 can be fit into 3190 4 times, resulting in a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 1014.0
Subtracting 3188 from 3190 leaves us with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 797

Step 7:
797 can be fit into 22 0 times, resulting in a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 10140.0
Deduct 0 from 22 and we're left with 22.
Include the next digit (1) from the dividend after 22, then repeat: 221 / 797

Going ahead to step 8:
When dividing 221 by 797, we get 0 with a remainder of 221.
Put 0 as the next digit of the answer. 
Result so far: 101400.0
Subtract 0 from 221 to get 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Let's proceed to step 9:
The number 797 fits into 2210 2 times, leaving a remainder of 616.
Use 2 as the next digit of our solution. 
Result so far: 101400.2
If we subtract 1594 from 2210, we get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 10:
6160 divided by 797 is 7 with a remainder of 581.
Write down 7 as next digit of the result. 
Result so far: 101400.27
Deduct 5579 from 6160 and we're left with 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

On to step 11:
797 goes into 5810 7 times with a remainder of 231.
Record the quotient 7 as the next digit in the result. 
Result so far: 101400.277
Subtracting 5579 from 5810 leaves us with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

The final result is 101400.277 with a remainder of 0.0231.