We're dividing 453199 by 15 
Our goal is to divide 453199 by 15.

On to step 1:
15 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 15

On to step 2:
If we divide 45 by 15, we get 3 and a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 45 from 45, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 15

Going ahead to step 3:
If we divide 3 by 15, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
If we subtract 0 from 3, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 15

Let's proceed to step 4:
The number 15 fits into 31 2 times, leaving a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 302.0
Subtract 30 from 31 to get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 15

Step 5:
15 can be fit into 19 1 times, resulting in a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 3021.0
Subtracting 15 from 19 leaves us with 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 15

Moving on to step 6:
If we divide 49 by 15, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 30213.0
The remainder is 4 after subtracting 45 from 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
The number 15 fits into 40 2 times, leaving a remainder of 10.
The next digit of our result is 2. 
Result so far: 30213.2
The remainder is 10 after subtracting 30 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
100 divided by 15 is 6 with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 30213.26
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.

On to step 9:
100 divided by 15 is 6 with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 30213.266
If we subtract 90 from 100, we 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 30213.266 with a remaining 0.001.