We divide 63917 by 15
We want to figure out the number of times 63917 can be divided by 15.

Step 1:
15 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 15

Moving on to step 2:
63 divided by 15 is 4 with a remainder of 3.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 60 from 63 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 15

Going ahead to step 3:
The number 15 fits into 39 2 times, leaving a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
Deduct 30 from 39 and we're left with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 15

Advancing to step 4:
15 can be fit into 91 6 times, resulting in a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 426.0
Subtracting 90 from 91 leaves us with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 15

On to step 5:
17 divided by 15 is 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 4261.0
The remainder is 2 after subtracting 15 from 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 6:
When dividing 20 by 15, we get 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 4261.1
If we subtract 15 from 20, 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.

Let's proceed to step 7:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 4261.13
If we subtract 45 from 50, 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 number 3 becomes the next digit in our result. 
Result so far: 4261.133
If we subtract 45 from 50, 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.

After the division, we end up with 4261.133 and a remainder of 0.0005.