We divide 638929 by 2
We're looking to find how many times 2 goes into 638929.

On to step 1:
If we divide 6 by 2, we get 3 and a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 0 after subtracting 6 from 6.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 2

On to step 2:
If we divide 3 by 2, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 31.0
If we take 2 away from 3, we end up with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 2

Moving on to step 3:
2 can be fit into 18 9 times, resulting in a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 319.0
Deduct 18 from 18 and we're left with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 2

Going ahead to step 4:
The number 2 fits into 9 4 times, leaving a remainder of 1.
The next digit of our result is 4. 
Result so far: 3194.0
If we subtract 8 from 9, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 2

Going ahead to step 5:
2 goes into 12 6 times with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 31946.0
If we take 12 away from 12, we end up with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 2

Advancing to step 6:
2 can be fit into 9 4 times, resulting in a remainder of 1.
The next digit of our result is 4. 
Result so far: 319464.0
Deduct 8 from 9 and we're left 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.

Moving on to step 7:
2 can be fit into 10 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 319464.5
Subtract 10 from 10 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.

Advancing to step 8:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 319464.5
If we take 0 away from 0, we end up with 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 9:
2 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 319464.5
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 319464.5, and the remainder is 0.0.