We're dividing 396078 by 81 
We want to divide 396078 by 81.

Going ahead to step 1:
If we divide 3 by 81, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 81

Step 2:
81 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Grab the next digit (6) from the dividend, add it to 39, then carry on: 396 / 81

On to step 3:
The number 81 fits into 396 4 times, leaving a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 72 after subtracting 324 from 396.
Include the next digit (0) from the dividend after 72, then repeat: 720 / 81

Going ahead to step 4:
720 divided by 81 is 8 with a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
If we take 648 away from 720, we end up with 72.
Bring next digit (7) of the dividend behind the 72 and repeat the process: 727 / 81

Let's proceed to step 5:
81 goes into 727 8 times with a remainder of 79.
Write down 8 as next digit of the result. 
Result so far: 488.0
Subtracting 648 from 727 leaves us with 79.
Include the next digit (8) from the dividend after 79, then repeat: 798 / 81

Moving on to step 6:
When dividing 798 by 81, we get 9 with a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 4889.0
If we subtract 729 from 798, 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.

Moving on to step 7:
The number 81 fits into 690 8 times, leaving a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 4889.8
If we take 648 away from 690, we end up 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.

Moving on to step 8:
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: 4889.85
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.

Going ahead to step 9:
If we divide 150 by 81, we get 1 and a remainder of 69.
The next digit of our result is 1. 
Result so far: 4889.851
If we take 81 away from 150, we end up 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.

Step 10:
The number 81 fits into 690 8 times, leaving a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 4889.8518
If we take 648 away from 690, we end up 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 11:
81 can be fit into 420 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 4889.85185
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.

Let's proceed to step 12:
81 can be fit into 150 1 times, resulting in a remainder of 69.
The next digit of our result is 1. 
Result so far: 4889.851851
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.

On to step 13:
690 divided by 81 is 8 with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 4889.8518518
If we take 648 away from 690, we end up 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 14:
420 divided by 81 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 4889.85185185
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.

After the division, we end up with 4889.85185185 and a remainder of 1.5e-08.