We're dividing 63991459 by 649 
We want to divide 63991459 by 649.

Step 1:
When dividing 6 by 649, we get 0 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.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 649

Let's proceed to step 2:
When dividing 63 by 649, we get 0 with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 649

On to step 3:
If we divide 639 by 649, we get 0 and a remainder of 639.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 639 after subtracting 0 from 639.
Include the next digit (9) from the dividend after 639, then repeat: 6399 / 649

Let's proceed to step 4:
If we divide 6399 by 649, we get 9 and a remainder of 558.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 5841 away from 6399, we end up with 558.
Bring next digit (1) of the dividend behind the 558 and repeat the process: 5581 / 649

Advancing to step 5:
The number 649 fits into 5581 8 times, leaving a remainder of 389.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
If we take 5192 away from 5581, we end up with 389.
Fetch the next digit (4) from the dividend, attach it to 389 and continue: 3894 / 649

Let's proceed to step 6:
If we divide 3894 by 649, we get 6 and a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 986.0
The remainder is 0 after subtracting 3894 from 3894.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 649

Let's proceed to step 7:
649 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 9860.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 649

Let's proceed to step 8:
649 goes into 59 0 times with a remainder of 59.
Use 0 as the next digit of our solution. 
Result so far: 98600.0
If we subtract 0 from 59, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 9:
If we divide 590 by 649, we get 0 and a remainder of 590.
Write down 0 as next digit of the result. 
Result so far: 98600.0
If we take 0 away from 590, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Step 10:
649 goes into 5900 9 times with a remainder of 59.
The number 9 becomes the next digit in our result. 
Result so far: 98600.09
Deduct 5841 from 5900 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 11:
If we divide 590 by 649, we get 0 and a remainder of 590.
Write down 0 as next digit of the result. 
Result so far: 98600.09
If we take 0 away from 590, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 12:
5900 divided by 649 is 9 with a remainder of 59.
The number 9 becomes the next digit in our result. 
Result so far: 98600.0909
The remainder is 59 after subtracting 5841 from 5900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 13:
The number 649 fits into 590 0 times, leaving a remainder of 590.
Put 0 as the next digit of the answer. 
Result so far: 98600.0909
If we subtract 0 from 590, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 14:
The number 649 fits into 5900 9 times, leaving a remainder of 59.
Record the quotient 9 as the next digit in the result. 
Result so far: 98600.090909
If we subtract 5841 from 5900, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 15:
649 goes into 590 0 times with a remainder of 590.
Use 0 as the next digit of our solution. 
Result so far: 98600.090909
Deduct 0 from 590 and we're left with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Going ahead to step 16:
When dividing 5900 by 649, we get 9 with a remainder of 59.
The number 9 becomes the next digit in our result. 
Result so far: 98600.09090909
Deduct 5841 from 5900 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

The final outcome is 98600.09090909, with a leftover of 5.9e-08.