We divide 398829 by 81
Our goal is to divide 398829 by 81.

Moving on to step 1:
81 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 81

Going ahead to step 2:
81 goes into 39 0 times with 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.
Grab the next digit (8) from the dividend, add it to 39, then carry on: 398 / 81

Going ahead to step 3:
When dividing 398 by 81, we get 4 with a remainder of 74.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 324 from 398 and we're left with 74.
Grab the next digit (8) from the dividend, add it to 74, then carry on: 748 / 81

Step 4:
81 can be fit into 748 9 times, resulting in a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 49.0
If we subtract 729 from 748, we get 19.
Grab the next digit (2) from the dividend, add it to 19, then carry on: 192 / 81

Moving on to step 5:
If we divide 192 by 81, we get 2 and a remainder of 30.
Record the quotient 2 as the next digit in the result. 
Result so far: 492.0
Subtract 162 from 192 to get 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 81

Step 6:
If we divide 309 by 81, we get 3 and a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 4923.0
Deduct 243 from 309 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 7:
The number 81 fits into 660 8 times, leaving a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 4923.8
Deduct 648 from 660 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
81 can be fit into 120 1 times, resulting in a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 4923.81
The remainder is 39 after subtracting 81 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 9:
81 can be fit into 390 4 times, resulting in a remainder of 66.
Use 4 as the next digit of our solution. 
Result so far: 4923.814
If we subtract 324 from 390, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 10:
660 divided by 81 is 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 4923.8148
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 11:
The number 81 fits into 120 1 times, leaving a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 4923.81481
If we subtract 81 from 120, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 12:
81 can be fit into 390 4 times, resulting in a remainder of 66.
Put 4 as the next digit of the answer. 
Result so far: 4923.814814
If we take 324 away from 390, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 13:
81 goes into 660 8 times with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 4923.8148148
Subtracting 648 from 660 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 14:
120 divided by 81 is 1 with a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 4923.81481481
The remainder is 39 after subtracting 81 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 4923.81481481, with a leftover of 3.9e-08.