We look at the division of 819816 by 81 
Let's see how many times 81 fits into 819816.

Going ahead to step 1:
When dividing 8 by 81, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 81

Step 2:
81 can be fit into 81 1 times, resulting in a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 81 from 81 and we're left with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 81

On to step 3:
When dividing 9 by 81, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 9 to get 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 81

Step 4:
If we divide 98 by 81, we get 1 and a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 101.0
Subtract 81 from 98 to get 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 81

Step 5:
The number 81 fits into 171 2 times, leaving a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 1012.0
If we subtract 162 from 171, we get 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 81

Going ahead to step 6:
When dividing 96 by 81, we get 1 with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 10121.0
Subtracting 81 from 96 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
150 divided by 81 is 1 with a remainder of 69.
The next digit of our result is 1. 
Result so far: 10121.1
Deduct 81 from 150 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 8:
690 divided by 81 is 8 with a remainder of 42.
The next digit of our result is 8. 
Result so far: 10121.18
Subtracting 648 from 690 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 9:
The number 81 fits into 420 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 10121.185
Subtracting 405 from 420 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
When dividing 150 by 81, we get 1 with a remainder of 69.
Put 1 as the next digit of the answer. 
Result so far: 10121.1851
Subtracting 81 from 150 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 11:
81 can be fit into 690 8 times, resulting in a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 10121.18518
Deduct 648 from 690 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 12:
The number 81 fits into 420 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 10121.185185
Subtracting 405 from 420 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 13:
The number 81 fits into 150 1 times, leaving a remainder of 69.
Put 1 as the next digit of the answer. 
Result so far: 10121.1851851
If we subtract 81 from 150, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 14:
The number 81 fits into 690 8 times, leaving a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 10121.18518518
If we subtract 648 from 690, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The quotient of the division is 10121.18518518, and the remainder is 4.2e-08.