863231 ÷ 45 
We want to divide 863231 by 45.

Moving on to step 1:
45 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 45

On to step 2:
The number 45 fits into 86 1 times, leaving a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 41 after subtracting 45 from 86.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 45

Moving on to step 3:
45 goes into 413 9 times with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we subtract 405 from 413, we get 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 45

Moving on to step 4:
45 can be fit into 82 1 times, resulting in a remainder of 37.
The next digit of our result is 1. 
Result so far: 191.0
Subtracting 45 from 82 leaves us with 37.
Bring next digit (3) of the dividend behind the 37 and repeat the process: 373 / 45

Going ahead to step 5:
45 can be fit into 373 8 times, resulting in a remainder of 13.
The next digit of our result is 8. 
Result so far: 1918.0
Deduct 360 from 373 and we're left with 13.
Fetch the next digit (1) from the dividend, attach it to 13 and continue: 131 / 45

Going ahead to step 6:
When dividing 131 by 45, we get 2 with a remainder of 41.
Write down 2 as next digit of the result. 
Result so far: 19182.0
Deduct 90 from 131 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 7:
When dividing 410 by 45, we get 9 with a remainder of 5.
The next digit of our result is 9. 
Result so far: 19182.9
Subtract 405 from 410 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
45 goes into 50 1 times with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 19182.91
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
If we divide 50 by 45, we get 1 and a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 19182.911
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 19182.911, with a leftover of 0.0005.