390376 ÷ 81 
Our goal is to divide 390376 by 81.

Going ahead to step 1:
3 divided by 81 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 81

Moving on to step 2:
81 can be fit into 39 0 times, resulting in a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Bring next digit (0) of the dividend behind the 39 and repeat the process: 390 / 81

Let's proceed to step 3:
If we divide 390 by 81, we get 4 and a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 66 after subtracting 324 from 390.
Append the next digit (3) from the dividend to 66 and continue with: 663 / 81

Let's proceed to step 4:
663 divided by 81 is 8 with a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Subtract 648 from 663 to get 15.
Take the next digit (7) from the dividend and append it to 15, then repeat: 157 / 81

Going ahead to step 5:
157 divided by 81 is 1 with a remainder of 76.
The number 1 becomes the next digit in our result. 
Result so far: 481.0
If we take 81 away from 157, we end up with 76.
Take the next digit (6) from the dividend and append it to 76, then repeat: 766 / 81

Going ahead to step 6:
If we divide 766 by 81, we get 9 and a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 4819.0
If we take 729 away from 766, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 7:
When dividing 370 by 81, we get 4 with a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 4819.4
Deduct 324 from 370 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 8:
When dividing 460 by 81, we get 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 4819.45
The remainder is 55 after subtracting 405 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 9:
If we divide 550 by 81, we get 6 and a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 4819.456
Deduct 486 from 550 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 10:
640 divided by 81 is 7 with a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 4819.4567
Subtract 567 from 640 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 11:
If we divide 730 by 81, we get 9 and a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 4819.45679
Subtract 729 from 730 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 12:
10 divided by 81 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 4819.45679
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
81 can be fit into 100 1 times, resulting in a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 4819.4567901
The remainder is 19 after subtracting 81 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 14:
190 divided by 81 is 2 with a remainder of 28.
The next digit of our result is 2. 
Result so far: 4819.45679012
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 4819.45679012, and the remainder is 2.8e-08.