We're dividing 515940 by 15 
Let's see how many times 15 fits into 515940.

Moving on to step 1:
5 divided by 15 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 15

Step 2:
When dividing 51 by 15, we get 3 with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 6 after subtracting 45 from 51.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 15

Advancing to step 3:
65 divided by 15 is 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Deduct 60 from 65 and we're left with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 15

Step 4:
The number 15 fits into 59 3 times, leaving a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 343.0
If we subtract 45 from 59, we get 14.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 15

Going ahead to step 5:
15 can be fit into 144 9 times, resulting in a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 3439.0
If we subtract 135 from 144, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 15

Let's proceed to step 6:
The number 15 fits into 90 6 times, leaving a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 34396.0
Subtract 90 from 90 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.

Step 7:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 34396.0
The remainder is 0 after subtracting 0 from 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 8:
15 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34396.0
Deduct 0 from 0 and we're left 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 34396.0, and the remainder is 0.0.