390901 divided by 81 
Our goal is to divide 390901 by 81.

Advancing to step 1:
When dividing 3 by 81, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 81

On to step 2:
81 can be fit into 39 0 times, resulting in a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 81

Going ahead to step 3:
If we divide 390 by 81, we get 4 and a remainder of 66.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 66 after subtracting 324 from 390.
Bring next digit (9) of the dividend behind the 66 and repeat the process: 669 / 81

On to step 4:
If we divide 669 by 81, we get 8 and a remainder of 21.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
Deduct 648 from 669 and we're left with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 81

Let's proceed to step 5:
81 goes into 210 2 times with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 482.0
Deduct 162 from 210 and we're left with 48.
Fetch the next digit (1) from the dividend, attach it to 48 and continue: 481 / 81

Step 6:
81 goes into 481 5 times with a remainder of 76.
The next digit of our result is 5. 
Result so far: 4825.0
Deduct 405 from 481 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 7:
When dividing 760 by 81, we get 9 with a remainder of 31.
The next digit of our result is 9. 
Result so far: 4825.9
If we subtract 729 from 760, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 8:
81 can be fit into 310 3 times, resulting in a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 4825.93
The remainder is 67 after subtracting 243 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 9:
If we divide 670 by 81, we get 8 and a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 4825.938
Subtract 648 from 670 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 10:
220 divided by 81 is 2 with a remainder of 58.
The next digit of our result is 2. 
Result so far: 4825.9382
If we subtract 162 from 220, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 11:
The number 81 fits into 580 7 times, leaving a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 4825.93827
Deduct 567 from 580 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 12:
81 goes into 130 1 times with a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 4825.938271
If we subtract 81 from 130, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 13:
When dividing 490 by 81, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 4825.9382716
Deduct 486 from 490 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
81 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 4825.9382716
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 4825.9382716 with a remainder of 4e-08.