We're dividing 390445 by 81 
Our goal is to divide 390445 by 81.

On to step 1:
When dividing 3 by 81, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
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

Moving on to 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
The remainder is 39 after subtracting 0 from 39.
Include the next digit (0) from the dividend after 39, then repeat: 390 / 81

Let's proceed to step 3:
The number 81 fits into 390 4 times, leaving a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 324 away from 390, we end up with 66.
Fetch the next digit (4) from the dividend, attach it to 66 and continue: 664 / 81

Let's proceed to step 4:
The number 81 fits into 664 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 648 from 664 to get 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 81

Moving on to step 5:
If we divide 164 by 81, we get 2 and a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 482.0
Deduct 162 from 164 and we're left with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 81

Step 6:
When dividing 25 by 81, we get 0 with a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 4820.0
Deduct 0 from 25 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
81 goes into 250 3 times with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 4820.3
Subtract 243 from 250 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
81 can be fit into 70 0 times, resulting in a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 4820.3
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 9:
When dividing 700 by 81, we get 8 with a remainder of 52.
The next digit of our result is 8. 
Result so far: 4820.308
Subtracting 648 from 700 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 10:
The number 81 fits into 520 6 times, leaving a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 4820.3086
Subtract 486 from 520 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 11:
If we divide 340 by 81, we get 4 and a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 4820.30864
If we take 324 away from 340, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 12:
81 goes into 160 1 times with a remainder of 79.
The number 1 becomes the next digit in our result. 
Result so far: 4820.308641
The remainder is 79 after subtracting 81 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 13:
790 divided by 81 is 9 with a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 4820.3086419
Subtracting 729 from 790 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 14:
The number 81 fits into 610 7 times, leaving a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 4820.30864197
If we take 567 away from 610, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

In conclusion, the division gives 4820.30864197 with a balance of 4.3e-08.