Let's divide 396109 by 15
Let's see how many times 15 fits into 396109.

Advancing to step 1:
When dividing 3 by 15, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 15

Moving on to step 2:
39 divided by 15 is 2 with a remainder of 9.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 30 from 39 leaves us with 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 15

Going ahead to step 3:
15 can be fit into 96 6 times, resulting in a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Deduct 90 from 96 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 15

On to step 4:
15 can be fit into 61 4 times, resulting in a remainder of 1.
The next digit of our result is 4. 
Result so far: 264.0
If we subtract 60 from 61, we get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 15

Moving on to step 5:
If we divide 10 by 15, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 2640.0
If we subtract 0 from 10, we get 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 15

On to step 6:
15 can be fit into 109 7 times, resulting in a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 26407.0
The remainder is 4 after subtracting 105 from 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
The number 15 fits into 40 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 26407.2
If we subtract 30 from 40, 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.

Advancing to step 8:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 26407.26
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
15 goes into 100 6 times with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 26407.266
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.

The final outcome is 26407.266, with a leftover of 0.001.