We're dividing 631629 by 15 
We want to figure out the number of times 631629 can be divided by 15.

Let's proceed to step 1:
If we divide 6 by 15, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 15

Advancing to step 2:
63 divided by 15 is 4 with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 60 from 63 and we're left with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 15

Going ahead to step 3:
15 can be fit into 31 2 times, resulting in a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 42.0
The remainder is 1 after subtracting 30 from 31.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 15

Let's proceed to step 4:
15 can be fit into 16 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 421.0
If we subtract 15 from 16, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 15

Going ahead to step 5:
15 can be fit into 12 0 times, resulting in a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 4210.0
If we take 0 away from 12, we end up with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 15

Let's proceed to step 6:
129 divided by 15 is 8 with a remainder of 9.
The next digit of our result is 8. 
Result so far: 42108.0
Subtracting 120 from 129 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
When dividing 90 by 15, we get 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 42108.6
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 15 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 42108.6
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 15 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 42108.6
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 42108.6, and the remainder is 0.0.