We're dividing 363558 by 15 
We want to divide 363558 by 15.

On to step 1:
When dividing 3 by 15, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 15

Going ahead to step 2:
15 can be fit into 36 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 30 from 36 and we're left with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 15

Going ahead to step 3:
When dividing 63 by 15, we get 4 with a remainder of 3.
The next digit of our result is 4. 
Result so far: 24.0
Subtracting 60 from 63 leaves us with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 15

Let's proceed to step 4:
When dividing 35 by 15, we get 2 with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 242.0
The remainder is 5 after subtracting 30 from 35.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 15

Advancing to step 5:
The number 15 fits into 55 3 times, leaving a remainder of 10.
The next digit of our result is 3. 
Result so far: 2423.0
Subtract 45 from 55 to get 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 15

Step 6:
The number 15 fits into 108 7 times, leaving a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 24237.0
If we take 105 away from 108, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
If we divide 30 by 15, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 24237.2
If we subtract 30 from 30, we 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 8:
If we divide 0 by 15, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24237.2
If we subtract 0 from 0, we 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.

On to step 9:
When dividing 0 by 15, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 24237.2
If we subtract 0 from 0, we 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.

The final result is 24237.2 with a remainder of 0.0.