We divide 8431145 by 863
We're looking to find how many times 863 goes into 8431145.

On to step 1:
863 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 863

Step 2:
84 divided by 863 is 0 with a remainder of 84.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 84 leaves us with 84.
Grab the next digit (3) from the dividend, add it to 84, then carry on: 843 / 863

Step 3:
863 can be fit into 843 0 times, resulting in a remainder of 843.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 843 after subtracting 0 from 843.
Take the next digit (1) from the dividend and append it to 843, then repeat: 8431 / 863

Going ahead to step 4:
The number 863 fits into 8431 9 times, leaving a remainder of 664.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 664 after subtracting 7767 from 8431.
Include the next digit (1) from the dividend after 664, then repeat: 6641 / 863

On to step 5:
6641 divided by 863 is 7 with a remainder of 600.
The number 7 becomes the next digit in our result. 
Result so far: 97.0
If we subtract 6041 from 6641, we get 600.
Fetch the next digit (4) from the dividend, attach it to 600 and continue: 6004 / 863

On to step 6:
863 goes into 6004 6 times with a remainder of 826.
Record the quotient 6 as the next digit in the result. 
Result so far: 976.0
If we subtract 5178 from 6004, we get 826.
Append the next digit (5) from the dividend to 826 and continue with: 8265 / 863

Let's proceed to step 7:
863 goes into 8265 9 times with a remainder of 498.
Put 9 as the next digit of the answer. 
Result so far: 9769.0
If we take 7767 away from 8265, we end up with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Advancing to step 8:
863 goes into 4980 5 times with a remainder of 665.
Put 5 as the next digit of the answer. 
Result so far: 9769.5
The remainder is 665 after subtracting 4315 from 4980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Step 9:
863 goes into 6650 7 times with a remainder of 609.
Record the quotient 7 as the next digit in the result. 
Result so far: 9769.57
Deduct 6041 from 6650 and we're left with 609.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6090, and continue the process.

Going ahead to step 10:
863 can be fit into 6090 7 times, resulting in a remainder of 49.
Write down 7 as next digit of the result. 
Result so far: 9769.577
If we take 6041 away from 6090, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The final outcome is 9769.577, with a leftover of 0.0049.