515249 divided by 18 
We're looking to find how many times 18 goes into 515249.

Step 1:
When dividing 5 by 18, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 18

Moving on to step 2:
18 can be fit into 51 2 times, resulting in a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 36 from 51 to get 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 18

Moving on to step 3:
18 can be fit into 155 8 times, resulting in a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
Deduct 144 from 155 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 18

Let's proceed to step 4:
When dividing 112 by 18, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 286.0
Deduct 108 from 112 and we're left with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 18

On to step 5:
18 goes into 44 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2862.0
If we subtract 36 from 44, we get 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 18

Going ahead to step 6:
If we divide 89 by 18, we get 4 and a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 28624.0
If we subtract 72 from 89, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
18 goes into 170 9 times with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 28624.9
The remainder is 8 after subtracting 162 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 28624.94
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 28624.944
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 28624.944, and the remainder is 0.0008.