391710 divided by 81 
Our goal is to divide 391710 by 81.

Let's proceed to step 1:
3 divided by 81 is 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.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 81

Advancing to step 2:
81 can be fit into 39 0 times, resulting in a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 81

On to step 3:
391 divided by 81 is 4 with a remainder of 67.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 67 after subtracting 324 from 391.
Take the next digit (7) from the dividend and append it to 67, then repeat: 677 / 81

Moving on to step 4:
If we divide 677 by 81, we get 8 and a remainder of 29.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 648 from 677 to get 29.
Include the next digit (1) from the dividend after 29, then repeat: 291 / 81

Moving on to step 5:
291 divided by 81 is 3 with a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 483.0
The remainder is 48 after subtracting 243 from 291.
Grab the next digit (0) from the dividend, add it to 48, then carry on: 480 / 81

Let's proceed to step 6:
When dividing 480 by 81, we get 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 4835.0
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 7:
If we divide 750 by 81, we get 9 and a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 4835.9
Deduct 729 from 750 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 8:
81 can be fit into 210 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 4835.92
Subtracting 162 from 210 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 9:
When dividing 480 by 81, we get 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 4835.925
Deduct 405 from 480 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 10:
81 goes into 750 9 times with a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 4835.9259
If we take 729 away from 750, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 11:
When dividing 210 by 81, we get 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 4835.92592
The remainder is 48 after subtracting 162 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 12:
If we divide 480 by 81, we get 5 and a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 4835.925925
Subtract 405 from 480 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 13:
81 goes into 750 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 4835.9259259
If we subtract 729 from 750, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 14:
81 can be fit into 210 2 times, resulting in a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 4835.92592592
If we subtract 162 from 210, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 4835.92592592 with a remainder of 4.8e-08.