648446 divided by 15 
We want to figure out the number of times 648446 can be divided by 15.

Let's proceed to step 1:
15 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 15

Advancing to step 2:
15 can be fit into 64 4 times, resulting in a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 60 away from 64, we end up with 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 15

Let's proceed to step 3:
15 goes into 48 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 43.0
Subtract 45 from 48 to get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 15

On to step 4:
If we divide 34 by 15, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 432.0
If we take 30 away from 34, we end up with 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 15

Let's proceed to step 5:
If we divide 44 by 15, we get 2 and a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 4322.0
If we subtract 30 from 44, we get 14.
Take the next digit (6) from the dividend and append it to 14, then repeat: 146 / 15

On to step 6:
146 divided by 15 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 43229.0
Subtracting 135 from 146 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
If we divide 110 by 15, we get 7 and a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 43229.7
If we subtract 105 from 110, 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 8:
When dividing 50 by 15, we get 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 43229.73
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.

Moving on to step 9:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 43229.733
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.

After the division, we end up with 43229.733 and a remainder of 0.0005.