We divide 664129 by 15
Our goal is to divide 664129 by 15.

On to step 1:
6 divided by 15 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 15

On to step 2:
When dividing 66 by 15, we get 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 60 from 66 and we're left with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 15

Let's proceed to step 3:
15 goes into 64 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 44.0
Subtract 60 from 64 to get 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 15

Moving on to step 4:
15 goes into 41 2 times with a remainder of 11.
Record the quotient 2 as the next digit in the result. 
Result so far: 442.0
Deduct 30 from 41 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 15

Going ahead to step 5:
15 goes into 112 7 times with a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 4427.0
If we subtract 105 from 112, we get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 15

Step 6:
When dividing 79 by 15, we get 5 with a remainder of 4.
The next digit of our result is 5. 
Result so far: 44275.0
If we subtract 75 from 79, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to 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: 44275.2
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.

Step 8:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 44275.26
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.

Advancing to step 9:
When dividing 100 by 15, we get 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 44275.266
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 44275.266 and a remainder of 0.001.