515710 divided by 15 
We want to figure out the number of times 515710 can be divided by 15.

Going ahead to step 1:
15 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 15

Going ahead to step 2:
15 goes into 51 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 45 from 51, we get 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 15

Going ahead to step 3:
15 can be fit into 65 4 times, resulting in a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
If we take 60 away from 65, we end up with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 15

Step 4:
If we divide 57 by 15, we get 3 and a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 343.0
Deduct 45 from 57 and we're left with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 15

Let's proceed to step 5:
When dividing 121 by 15, we get 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 3438.0
Subtracting 120 from 121 leaves us with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 15

On to step 6:
15 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 34380.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 34380.6
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
The number 15 fits into 100 6 times, leaving a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 34380.66
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 34380.66 with a remaining 0.01.