We look at the division of 63329639 by 15 
We want to divide 63329639 by 15.

On to step 1:
15 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 15

Going ahead to step 2:
15 goes into 63 4 times with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 3 after subtracting 60 from 63.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 15

Step 3:
15 goes into 33 2 times with a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we subtract 30 from 33, we get 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 15

Going ahead to step 4:
15 goes into 32 2 times with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 422.0
If we take 30 away from 32, we end up with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 15

Step 5:
If we divide 29 by 15, we get 1 and a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 4221.0
Deduct 15 from 29 and we're left with 14.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 15

Let's proceed to step 6:
15 goes into 146 9 times with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 42219.0
If we subtract 135 from 146, we get 11.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 15

Going ahead to step 7:
If we divide 113 by 15, we get 7 and a remainder of 8.
The next digit of our result is 7. 
Result so far: 422197.0
Subtracting 105 from 113 leaves us with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 15

On to step 8:
15 goes into 89 5 times with a remainder of 14.
The next digit of our result is 5. 
Result so far: 4221975.0
The remainder is 14 after subtracting 75 from 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
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: 4221975.9
Deduct 135 from 140 and we're left 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.

Let's proceed to step 10:
When dividing 50 by 15, we get 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 4221975.93
If we take 45 away from 50, 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 11:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 4221975.933
If we take 45 away from 50, 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.

After the division, we end up with 4221975.933 and a remainder of 0.0005.