99863560 divided by 800 
Our goal is to divide 99863560 by 800.

Let's proceed to step 1:
The number 800 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 800

Advancing to step 2:
When dividing 99 by 800, we get 0 with a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Include the next digit (8) from the dividend after 99, then repeat: 998 / 800

Step 3:
800 can be fit into 998 1 times, resulting in a remainder of 198.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 800 from 998, we get 198.
Take the next digit (6) from the dividend and append it to 198, then repeat: 1986 / 800

Let's proceed to step 4:
1986 divided by 800 is 2 with a remainder of 386.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 1600 away from 1986, we end up with 386.
Append the next digit (3) from the dividend to 386 and continue with: 3863 / 800

Step 5:
800 can be fit into 3863 4 times, resulting in a remainder of 663.
The number 4 becomes the next digit in our result. 
Result so far: 124.0
If we take 3200 away from 3863, we end up with 663.
Take the next digit (5) from the dividend and append it to 663, then repeat: 6635 / 800

On to step 6:
If we divide 6635 by 800, we get 8 and a remainder of 235.
The number 8 becomes the next digit in our result. 
Result so far: 1248.0
Deduct 6400 from 6635 and we're left with 235.
Append the next digit (6) from the dividend to 235 and continue with: 2356 / 800

Moving on to step 7:
800 goes into 2356 2 times with a remainder of 756.
Write down 2 as next digit of the result. 
Result so far: 12482.0
The remainder is 756 after subtracting 1600 from 2356.
Append the next digit (0) from the dividend to 756 and continue with: 7560 / 800

Going ahead to step 8:
800 can be fit into 7560 9 times, resulting in a remainder of 360.
Use 9 as the next digit of our solution. 
Result so far: 124829.0
The remainder is 360 after subtracting 7200 from 7560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 9:
When dividing 3600 by 800, we get 4 with a remainder of 400.
The next digit of our result is 4. 
Result so far: 124829.4
Subtracting 3200 from 3600 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 10:
800 goes into 4000 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 124829.45
If we subtract 4000 from 4000, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
800 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 124829.45
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 12:
The number 800 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 124829.45
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 124829.45, and the remainder is 0.0.