63483615 ÷ 815 
We want to divide 63483615 by 815.

Step 1:
If we divide 6 by 815, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 815

Going ahead to step 2:
815 can be fit into 63 0 times, resulting in a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Fetch the next digit (4) from the dividend, attach it to 63 and continue: 634 / 815

Step 3:
If we divide 634 by 815, we get 0 and a remainder of 634.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 634 and we're left with 634.
Fetch the next digit (8) from the dividend, attach it to 634 and continue: 6348 / 815

Advancing to step 4:
The number 815 fits into 6348 7 times, leaving a remainder of 643.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 5705 from 6348 to get 643.
Include the next digit (3) from the dividend after 643, then repeat: 6433 / 815

Step 5:
If we divide 6433 by 815, we get 7 and a remainder of 728.
Use 7 as the next digit of our solution. 
Result so far: 77.0
Deduct 5705 from 6433 and we're left with 728.
Take the next digit (6) from the dividend and append it to 728, then repeat: 7286 / 815

Step 6:
When dividing 7286 by 815, we get 8 with a remainder of 766.
Write down 8 as next digit of the result. 
Result so far: 778.0
If we subtract 6520 from 7286, we get 766.
Bring next digit (1) of the dividend behind the 766 and repeat the process: 7661 / 815

Moving on to step 7:
The number 815 fits into 7661 9 times, leaving a remainder of 326.
The next digit of our result is 9. 
Result so far: 7789.0
Subtracting 7335 from 7661 leaves us with 326.
Append the next digit (5) from the dividend to 326 and continue with: 3265 / 815

On to step 8:
815 goes into 3265 4 times with a remainder of 5.
The next digit of our result is 4. 
Result so far: 77894.0
Deduct 3260 from 3265 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.

Step 9:
If we divide 50 by 815, we get 0 and a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 77894.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
815 can be fit into 500 0 times, resulting in a remainder of 500.
Use 0 as the next digit of our solution. 
Result so far: 77894.0
Subtracting 0 from 500 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

The final result is 77894.0 with a remainder of 0.5.