823403 ÷ 86 
We want to divide 823403 by 86.

Advancing to step 1:
8 divided by 86 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 86

Going ahead to step 2:
When dividing 82 by 86, we get 0 with a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 82 to get 82.
Take the next digit (3) from the dividend and append it to 82, then repeat: 823 / 86

On to step 3:
When dividing 823 by 86, we get 9 with a remainder of 49.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 774 from 823 leaves us with 49.
Append the next digit (4) from the dividend to 49 and continue with: 494 / 86

Moving on to step 4:
The number 86 fits into 494 5 times, leaving a remainder of 64.
Put 5 as the next digit of the answer. 
Result so far: 95.0
Subtract 430 from 494 to get 64.
Bring next digit (0) of the dividend behind the 64 and repeat the process: 640 / 86

Going ahead to step 5:
640 divided by 86 is 7 with a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 957.0
Deduct 602 from 640 and we're left with 38.
Grab the next digit (3) from the dividend, add it to 38, then carry on: 383 / 86

On to step 6:
383 divided by 86 is 4 with a remainder of 39.
Put 4 as the next digit of the answer. 
Result so far: 9574.0
If we subtract 344 from 383, 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 7:
If we divide 390 by 86, we get 4 and a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 9574.4
Subtract 344 from 390 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 8:
If we divide 460 by 86, we get 5 and a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 9574.45
Subtracting 430 from 460 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
86 can be fit into 300 3 times, resulting in a remainder of 42.
The next digit of our result is 3. 
Result so far: 9574.453
Subtracting 258 from 300 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 10:
86 can be fit into 420 4 times, resulting in a remainder of 76.
The next digit of our result is 4. 
Result so far: 9574.4534
The remainder is 76 after subtracting 344 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 11:
If we divide 760 by 86, we get 8 and a remainder of 72.
The next digit of our result is 8. 
Result so far: 9574.45348
Deduct 688 from 760 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 12:
If we divide 720 by 86, we get 8 and a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 9574.453488
Subtract 688 from 720 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 9574.453488 with a remaining 3.2e-06.