535259 ÷ 15 
Let's see how many times 15 fits into 535259.

Step 1:
15 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 15

Let's proceed to step 2:
15 can be fit into 53 3 times, resulting in a remainder of 8.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 45 from 53 to get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 15

Step 3:
15 goes into 85 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Subtracting 75 from 85 leaves us with 10.
Grab the next digit (2) from the dividend, add it to 10, then carry on: 102 / 15

Step 4:
15 goes into 102 6 times with a remainder of 12.
The next digit of our result is 6. 
Result so far: 356.0
If we subtract 90 from 102, we get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 15

On to step 5:
15 goes into 125 8 times with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 3568.0
Deduct 120 from 125 and we're left with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 15

Going ahead to step 6:
15 goes into 59 3 times with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 35683.0
Subtract 45 from 59 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
When dividing 140 by 15, we get 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 35683.9
Subtracting 135 from 140 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The next digit of our result is 3. 
Result so far: 35683.93
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 35683.933
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 35683.933, with a leftover of 0.0005.