We look at the division of 663728 by 81 
Our goal is to divide 663728 by 81.

Going ahead to step 1:
6 divided by 81 is 0 with 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:
81 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Take the next digit (3) from the dividend and append it to 66, then repeat: 663 / 81

Going ahead to step 3:
81 goes into 663 8 times with a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 648 from 663 to get 15.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 81

On to step 4:
81 can be fit into 157 1 times, resulting in a remainder of 76.
Write down 1 as next digit of the result. 
Result so far: 81.0
Subtracting 81 from 157 leaves us with 76.
Take the next digit (2) from the dividend and append it to 76, then repeat: 762 / 81

On to step 5:
81 goes into 762 9 times with a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 819.0
Subtracting 729 from 762 leaves us with 33.
Append the next digit (8) from the dividend to 33 and continue with: 338 / 81

Step 6:
When dividing 338 by 81, we get 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 8194.0
Deduct 324 from 338 and we're left 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.

Let's proceed to step 7:
The number 81 fits into 140 1 times, leaving a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 8194.1
If we subtract 81 from 140, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 8:
81 goes into 590 7 times with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 8194.17
Subtracting 567 from 590 leaves us 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 9:
The number 81 fits into 230 2 times, leaving a remainder of 68.
The next digit of our result is 2. 
Result so far: 8194.172
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.

Step 10:
When dividing 680 by 81, we get 8 with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 8194.1728
Subtract 648 from 680 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 11:
81 can be fit into 320 3 times, resulting in a remainder of 77.
Use 3 as the next digit of our solution. 
Result so far: 8194.17283
If we take 243 away from 320, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 12:
81 goes into 770 9 times with a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 8194.172839
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.

Let's proceed to step 13:
If we divide 410 by 81, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 8194.1728395
If we take 405 away from 410, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
The number 81 fits into 50 0 times, leaving a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 8194.1728395
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 8194.1728395, with a leftover of 5e-08.