15115856 ÷ 505 
Our goal is to divide 15115856 by 505.

Step 1:
When dividing 1 by 505, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 505

On to step 2:
505 goes into 15 0 times with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 505

Going ahead to step 3:
505 can be fit into 151 0 times, resulting in a remainder of 151.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 151 to get 151.
Fetch the next digit (1) from the dividend, attach it to 151 and continue: 1511 / 505

Step 4:
505 goes into 1511 2 times with a remainder of 501.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 1010 from 1511 leaves us with 501.
Fetch the next digit (5) from the dividend, attach it to 501 and continue: 5015 / 505

On to step 5:
When dividing 5015 by 505, we get 9 with a remainder of 470.
Use 9 as the next digit of our solution. 
Result so far: 29.0
Subtract 4545 from 5015 to get 470.
Fetch the next digit (8) from the dividend, attach it to 470 and continue: 4708 / 505

Step 6:
4708 divided by 505 is 9 with a remainder of 163.
Write down 9 as next digit of the result. 
Result so far: 299.0
Deduct 4545 from 4708 and we're left with 163.
Include the next digit (5) from the dividend after 163, then repeat: 1635 / 505

Moving on to step 7:
1635 divided by 505 is 3 with a remainder of 120.
The number 3 becomes the next digit in our result. 
Result so far: 2993.0
Subtract 1515 from 1635 to get 120.
Fetch the next digit (6) from the dividend, attach it to 120 and continue: 1206 / 505

Advancing to step 8:
When dividing 1206 by 505, we get 2 with a remainder of 196.
Use 2 as the next digit of our solution. 
Result so far: 29932.0
Deduct 1010 from 1206 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Going ahead to step 9:
When dividing 1960 by 505, we get 3 with a remainder of 445.
Write down 3 as next digit of the result. 
Result so far: 29932.3
If we subtract 1515 from 1960, we get 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Let's proceed to step 10:
If we divide 4450 by 505, we get 8 and a remainder of 410.
Record the quotient 8 as the next digit in the result. 
Result so far: 29932.38
Subtract 4040 from 4450 to get 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Step 11:
4100 divided by 505 is 8 with a remainder of 60.
Write down 8 as next digit of the result. 
Result so far: 29932.388
If we subtract 4040 from 4100, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 29932.388 with a remainder of 0.006.