We're dividing 797980 by 81 
We're looking to find how many times 81 goes into 797980.

Let's proceed to step 1:
When dividing 7 by 81, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 81

On to step 2:
When dividing 79 by 81, we get 0 with a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 79 to get 79.
Append the next digit (7) from the dividend to 79 and continue with: 797 / 81

On to step 3:
When dividing 797 by 81, we get 9 with a remainder of 68.
Put 9 as the next digit of the answer. 
Result so far: 9.0
The remainder is 68 after subtracting 729 from 797.
Fetch the next digit (9) from the dividend, attach it to 68 and continue: 689 / 81

Advancing to step 4:
689 divided by 81 is 8 with a remainder of 41.
The next digit of our result is 8. 
Result so far: 98.0
Deduct 648 from 689 and we're left with 41.
Fetch the next digit (8) from the dividend, attach it to 41 and continue: 418 / 81

Advancing to step 5:
81 can be fit into 418 5 times, resulting in a remainder of 13.
The next digit of our result is 5. 
Result so far: 985.0
If we subtract 405 from 418, we get 13.
Bring next digit (0) of the dividend behind the 13 and repeat the process: 130 / 81

Advancing to step 6:
When dividing 130 by 81, we get 1 with a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 9851.0
The remainder is 49 after subtracting 81 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 7:
The number 81 fits into 490 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 9851.6
The remainder is 4 after subtracting 486 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
If we divide 40 by 81, we get 0 and a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 9851.6
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
When dividing 400 by 81, we get 4 with a remainder of 76.
Write down 4 as next digit of the result. 
Result so far: 9851.604
If we subtract 324 from 400, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 10:
The number 81 fits into 760 9 times, leaving a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 9851.6049
Subtract 729 from 760 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 11:
81 goes into 310 3 times with a remainder of 67.
The next digit of our result is 3. 
Result so far: 9851.60493
The remainder is 67 after subtracting 243 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 12:
81 can be fit into 670 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 9851.604938
Deduct 648 from 670 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
220 divided by 81 is 2 with a remainder of 58.
Record the quotient 2 as the next digit in the result. 
Result so far: 9851.6049382
Subtract 162 from 220 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 14:
81 goes into 580 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 9851.60493827
Deduct 567 from 580 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Our division results in 9851.60493827 with a remaining 1.3e-08.