We're dividing 393508 by 81 
We want to figure out the number of times 393508 can be divided by 81.

Moving on to step 1:
81 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 81

Step 2:
When dividing 39 by 81, we get 0 with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Append the next digit (3) from the dividend to 39 and continue with: 393 / 81

Going ahead to step 3:
If we divide 393 by 81, we get 4 and a remainder of 69.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 324 from 393, we get 69.
Append the next digit (5) from the dividend to 69 and continue with: 695 / 81

Moving on to step 4:
If we divide 695 by 81, we get 8 and a remainder of 47.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Deduct 648 from 695 and we're left with 47.
Bring next digit (0) of the dividend behind the 47 and repeat the process: 470 / 81

Advancing to step 5:
81 goes into 470 5 times with a remainder of 65.
The next digit of our result is 5. 
Result so far: 485.0
The remainder is 65 after subtracting 405 from 470.
Append the next digit (8) from the dividend to 65 and continue with: 658 / 81

Moving on to step 6:
658 divided by 81 is 8 with a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 4858.0
If we take 648 away from 658, we end up 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.

On to step 7:
81 can be fit into 100 1 times, resulting in a remainder of 19.
The next digit of our result is 1. 
Result so far: 4858.1
Subtract 81 from 100 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 8:
81 can be fit into 190 2 times, resulting in a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 4858.12
Subtract 162 from 190 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
When dividing 280 by 81, we get 3 with a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 4858.123
If we subtract 243 from 280, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 10:
When dividing 370 by 81, we get 4 with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 4858.1234
Subtracting 324 from 370 leaves us 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 11:
81 goes into 460 5 times with a remainder of 55.
The next digit of our result is 5. 
Result so far: 4858.12345
Subtract 405 from 460 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 12:
When dividing 550 by 81, we get 6 with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 4858.123456
If we take 486 away from 550, we end up 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.

Moving on to step 13:
The number 81 fits into 640 7 times, leaving a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 4858.1234567
If we subtract 567 from 640, we 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 14:
730 divided by 81 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 4858.12345679
Deduct 729 from 730 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 4858.12345679, with a leftover of 1e-09.