728439 divided by 15 
Let's see how many times 15 fits into 728439.

Advancing to step 1:
15 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 15

Let's proceed to step 2:
15 can be fit into 72 4 times, resulting in a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 12 after subtracting 60 from 72.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 15

Going ahead to step 3:
The number 15 fits into 128 8 times, leaving a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
If we take 120 away from 128, we end up with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 15

Going ahead to step 4:
84 divided by 15 is 5 with a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 485.0
Deduct 75 from 84 and we're left with 9.
Take the next digit (3) from the dividend and append it to 9, then repeat: 93 / 15

Step 5:
The number 15 fits into 93 6 times, leaving a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 4856.0
If we subtract 90 from 93, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 15

Let's proceed to step 6:
39 divided by 15 is 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 48562.0
If we subtract 30 from 39, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
If we divide 90 by 15, we get 6 and a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 48562.6
The remainder is 0 after subtracting 90 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
0 divided by 15 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 48562.6
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.

Going ahead to step 9:
0 divided by 15 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 48562.6
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 final outcome is 48562.6, with a leftover of 0.0.