503385 ÷ 15 
Let's see how many times 15 fits into 503385.

Let's proceed 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
If we take 0 away from 5, we end up with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 15

Advancing to step 2:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 45 from 50, we get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 15

Moving on to step 3:
15 can be fit into 53 3 times, resulting in a remainder of 8.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Deduct 45 from 53 and we're left with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 15

Step 4:
The number 15 fits into 83 5 times, leaving a remainder of 8.
The next digit of our result is 5. 
Result so far: 335.0
If we subtract 75 from 83, we get 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 15

Going ahead to step 5:
15 goes into 88 5 times with a remainder of 13.
The next digit of our result is 5. 
Result so far: 3355.0
Deduct 75 from 88 and we're left with 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 15

Going ahead to step 6:
When dividing 135 by 15, we get 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 33559.0
The remainder is 0 after subtracting 135 from 135.
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 7:
When dividing 0 by 15, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 33559.0
Subtract 0 from 0 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.

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: 33559.0
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.

The final outcome is 33559.0, with a leftover of 0.0.