839798 ÷ 81 
Let's see how many times 81 fits into 839798.

On to step 1:
The number 81 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 81

On to step 2:
81 goes into 83 1 times with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 81 from 83, we get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 81

Advancing to step 3:
If we divide 29 by 81, we get 0 and a remainder of 29.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 29, we end up with 29.
Grab the next digit (7) from the dividend, add it to 29, then carry on: 297 / 81

Step 4:
81 goes into 297 3 times with a remainder of 54.
The next digit of our result is 3. 
Result so far: 103.0
The remainder is 54 after subtracting 243 from 297.
Fetch the next digit (9) from the dividend, attach it to 54 and continue: 549 / 81

Advancing to step 5:
If we divide 549 by 81, we get 6 and a remainder of 63.
The number 6 becomes the next digit in our result. 
Result so far: 1036.0
If we subtract 486 from 549, we get 63.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 81

On to step 6:
81 can be fit into 638 7 times, resulting in a remainder of 71.
Write down 7 as next digit of the result. 
Result so far: 10367.0
The remainder is 71 after subtracting 567 from 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 7:
When dividing 710 by 81, we get 8 with a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 10367.8
The remainder is 62 after subtracting 648 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 8:
The number 81 fits into 620 7 times, leaving a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 10367.87
Subtract 567 from 620 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 9:
81 goes into 530 6 times with a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 10367.876
Subtracting 486 from 530 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 10:
81 goes into 440 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 10367.8765
Deduct 405 from 440 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 11:
350 divided by 81 is 4 with a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 10367.87654
Subtracting 324 from 350 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 12:
81 can be fit into 260 3 times, resulting in a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 10367.876543
If we take 243 away from 260, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 13:
81 goes into 170 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 10367.8765432
Subtracting 162 from 170 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 14:
The number 81 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 10367.8765432
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

After the division, we end up with 10367.8765432 and a remainder of 8e-08.