We look at the division of 639027 by 81 
Our goal is to divide 639027 by 81.

Let's proceed to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 81

Step 2:
81 can be fit into 63 0 times, resulting in a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Include the next digit (9) from the dividend after 63, then repeat: 639 / 81

Step 3:
If we divide 639 by 81, we get 7 and a remainder of 72.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 567 from 639 leaves us with 72.
Grab the next digit (0) from the dividend, add it to 72, then carry on: 720 / 81

Let's proceed to step 4:
The number 81 fits into 720 8 times, leaving a remainder of 72.
The next digit of our result is 8. 
Result so far: 78.0
If we subtract 648 from 720, we get 72.
Fetch the next digit (2) from the dividend, attach it to 72 and continue: 722 / 81

Step 5:
81 goes into 722 8 times with a remainder of 74.
Use 8 as the next digit of our solution. 
Result so far: 788.0
Subtracting 648 from 722 leaves us with 74.
Append the next digit (7) from the dividend to 74 and continue with: 747 / 81

Going ahead to step 6:
81 goes into 747 9 times with a remainder of 18.
Write down 9 as next digit of the result. 
Result so far: 7889.0
Deduct 729 from 747 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
81 can be fit into 180 2 times, resulting in a remainder of 18.
The next digit of our result is 2. 
Result so far: 7889.2
Subtract 162 from 180 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
When dividing 180 by 81, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 7889.22
Deduct 162 from 180 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 7889.22, and the remainder is 0.018.