We look at the division of 64639 by 63 
Let's see how many times 63 fits into 64639.

Going ahead to step 1:
63 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 63

Advancing to step 2:
64 divided by 63 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 1 after subtracting 63 from 64.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 63

Step 3:
When dividing 16 by 63, we get 0 with a remainder of 16.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 16 after subtracting 0 from 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 63

Step 4:
163 divided by 63 is 2 with a remainder of 37.
The next digit of our result is 2. 
Result so far: 102.0
Subtracting 126 from 163 leaves us with 37.
Include the next digit (9) from the dividend after 37, then repeat: 379 / 63

Let's proceed to step 5:
The number 63 fits into 379 6 times, leaving a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 1026.0
Subtract 378 from 379 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 6:
63 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 1026.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
100 divided by 63 is 1 with a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 1026.01
If we take 63 away from 100, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 8:
If we divide 370 by 63, we get 5 and a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 1026.015
If we subtract 315 from 370, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 9:
The number 63 fits into 550 8 times, leaving a remainder of 46.
Put 8 as the next digit of the answer. 
Result so far: 1026.0158
Subtract 504 from 550 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 10:
The number 63 fits into 460 7 times, leaving a remainder of 19.
The next digit of our result is 7. 
Result so far: 1026.01587
If we subtract 441 from 460, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 11:
190 divided by 63 is 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 1026.015873
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 12:
63 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 1026.015873
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 13:
The number 63 fits into 100 1 times, leaving a remainder of 37.
Use 1 as the next digit of our solution. 
Result so far: 1026.01587301
Subtracting 63 from 100 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final result is 1026.01587301 with a remainder of 3.7e-08.