Let's divide 87389963 by 863
Let's see how many times 863 fits into 87389963.

Step 1:
The number 863 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 863

Going ahead to step 2:
When dividing 87 by 863, we get 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Take the next digit (3) from the dividend and append it to 87, then repeat: 873 / 863

Let's proceed to step 3:
When dividing 873 by 863, we get 1 with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 863 away from 873, we end up with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 863

On to step 4:
The number 863 fits into 108 0 times, leaving a remainder of 108.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 108, we end up with 108.
Fetch the next digit (9) from the dividend, attach it to 108 and continue: 1089 / 863

Step 5:
When dividing 1089 by 863, we get 1 with a remainder of 226.
Record the quotient 1 as the next digit in the result. 
Result so far: 101.0
Subtract 863 from 1089 to get 226.
Take the next digit (9) from the dividend and append it to 226, then repeat: 2269 / 863

Step 6:
863 goes into 2269 2 times with a remainder of 543.
Record the quotient 2 as the next digit in the result. 
Result so far: 1012.0
Subtracting 1726 from 2269 leaves us with 543.
Take the next digit (6) from the dividend and append it to 543, then repeat: 5436 / 863

Step 7:
863 goes into 5436 6 times with a remainder of 258.
Use 6 as the next digit of our solution. 
Result so far: 10126.0
If we subtract 5178 from 5436, we get 258.
Grab the next digit (3) from the dividend, add it to 258, then carry on: 2583 / 863

Going ahead to step 8:
863 can be fit into 2583 2 times, resulting in a remainder of 857.
The next digit of our result is 2. 
Result so far: 101262.0
If we take 1726 away from 2583, we end up with 857.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8570, and continue the process.

Let's proceed to step 9:
If we divide 8570 by 863, we get 9 and a remainder of 803.
The next digit of our result is 9. 
Result so far: 101262.9
If we subtract 7767 from 8570, we get 803.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8030, and continue the process.

Moving on to step 10:
863 goes into 8030 9 times with a remainder of 263.
Record the quotient 9 as the next digit in the result. 
Result so far: 101262.99
Subtract 7767 from 8030 to get 263.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2630, and continue the process.

Our division results in 101262.99 with a remaining 0.263.