We're dividing 443609 by 15 
We want to figure out the number of times 443609 can be divided by 15.

Let's proceed to step 1:
If we divide 4 by 15, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 15

Going ahead to step 2:
The number 15 fits into 44 2 times, leaving a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 30 from 44 leaves us with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 15

Advancing to step 3:
If we divide 143 by 15, we get 9 and a remainder of 8.
The next digit of our result is 9. 
Result so far: 29.0
If we take 135 away from 143, we end up with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 15

Step 4:
15 can be fit into 86 5 times, resulting in a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 295.0
If we subtract 75 from 86, we get 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 15

Going ahead to step 5:
The number 15 fits into 110 7 times, leaving a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 2957.0
Subtracting 105 from 110 leaves us with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 15

On to step 6:
When dividing 59 by 15, we get 3 with a remainder of 14.
The next digit of our result is 3. 
Result so far: 29573.0
If we subtract 45 from 59, we 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.

Moving on to step 7:
The number 15 fits into 140 9 times, leaving a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 29573.9
If we take 135 away from 140, we end up 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.

Advancing to step 8:
If we divide 50 by 15, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 29573.93
Subtract 45 from 50 to 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.

Step 9:
50 divided by 15 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 29573.933
Subtracting 45 from 50 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.

After the division, we end up with 29573.933 and a remainder of 0.0005.