Let's divide 390604 by 81
We're looking to find how many times 81 goes into 390604.

On to step 1:
The number 81 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 81

Let's proceed to step 2:
The number 81 fits into 39 0 times, leaving a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Bring next digit (0) of the dividend behind the 39 and repeat the process: 390 / 81

On to step 3:
The number 81 fits into 390 4 times, leaving a remainder of 66.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 66 after subtracting 324 from 390.
Include the next digit (6) from the dividend after 66, then repeat: 666 / 81

Going ahead to step 4:
If we divide 666 by 81, we get 8 and a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
Subtract 648 from 666 to get 18.
Fetch the next digit (0) from the dividend, attach it to 18 and continue: 180 / 81

On to step 5:
The number 81 fits into 180 2 times, leaving a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 482.0
If we subtract 162 from 180, we get 18.
Fetch the next digit (4) from the dividend, attach it to 18 and continue: 184 / 81

Moving on to step 6:
The number 81 fits into 184 2 times, leaving a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 4822.0
Subtract 162 from 184 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 7:
When dividing 220 by 81, we get 2 with a remainder of 58.
The next digit of our result is 2. 
Result so far: 4822.2
The remainder is 58 after subtracting 162 from 220.
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 8:
580 divided by 81 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 4822.27
The remainder is 13 after subtracting 567 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 9:
If we divide 130 by 81, we get 1 and a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 4822.271
Deduct 81 from 130 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 10:
If we divide 490 by 81, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 4822.2716
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 11:
The number 81 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 4822.2716
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
If we divide 400 by 81, we get 4 and a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 4822.271604
If we subtract 324 from 400, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 13:
If we divide 760 by 81, we get 9 and a remainder of 31.
The next digit of our result is 9. 
Result so far: 4822.2716049
The remainder is 31 after subtracting 729 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 14:
If we divide 310 by 81, we get 3 and a remainder of 67.
Write down 3 as next digit of the result. 
Result so far: 4822.27160493
If we take 243 away from 310, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

In conclusion, the division gives 4822.27160493 with a balance of 6.7e-08.