We're dividing 665816 by 81 
We're looking to find how many times 81 goes into 665816.

Let's proceed to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 81

On to step 2:
If we divide 66 by 81, we get 0 and a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Append the next digit (5) from the dividend to 66 and continue with: 665 / 81

Step 3:
665 divided by 81 is 8 with a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 648 from 665 and we're left with 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 81

On to step 4:
81 goes into 178 2 times with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
If we take 162 away from 178, we end up with 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 81

Step 5:
When dividing 161 by 81, we get 1 with a remainder of 80.
The next digit of our result is 1. 
Result so far: 821.0
If we take 81 away from 161, we end up with 80.
Include the next digit (6) from the dividend after 80, then repeat: 806 / 81

Advancing to step 6:
806 divided by 81 is 9 with a remainder of 77.
The number 9 becomes the next digit in our result. 
Result so far: 8219.0
The remainder is 77 after subtracting 729 from 806.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

On to step 7:
770 divided by 81 is 9 with a remainder of 41.
Use 9 as the next digit of our solution. 
Result so far: 8219.9
Subtract 729 from 770 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 8:
If we divide 410 by 81, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 8219.95
The remainder is 5 after subtracting 405 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
81 can be fit into 50 0 times, resulting in a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 8219.95
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 10:
When dividing 500 by 81, we get 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 8219.9506
If we take 486 away from 500, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 11:
When dividing 140 by 81, we get 1 with a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 8219.95061
Subtracting 81 from 140 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 12:
The number 81 fits into 590 7 times, leaving a remainder of 23.
The next digit of our result is 7. 
Result so far: 8219.950617
If we take 567 away from 590, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 13:
When dividing 230 by 81, we get 2 with a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 8219.9506172
If we take 162 away from 230, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 14:
81 can be fit into 680 8 times, resulting in a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 8219.95061728
Subtracting 648 from 680 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 8219.95061728, with a leftover of 3.2e-08.