We divide 639838 by 1
Our goal is to divide 639838 by 1.

Moving on to step 1:
1 can be fit into 6 6 times, resulting in a remainder of 0.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 6 from 6 to get 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 1

Let's proceed to step 2:
1 goes into 3 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 63.0
If we take 3 away from 3, we end up with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 1

Going ahead to step 3:
If we divide 9 by 1, we get 9 and a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 639.0
If we subtract 9 from 9, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 1

Advancing to step 4:
8 divided by 1 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 6398.0
If we subtract 8 from 8, we get 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 1

Let's proceed to step 5:
1 can be fit into 3 3 times, resulting in a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 63983.0
The remainder is 0 after subtracting 3 from 3.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 1

Let's proceed to step 6:
When dividing 8 by 1, we get 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 639838.0
The remainder is 0 after subtracting 8 from 8.
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 7:
1 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 639838.0
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.

Step 8:
The number 1 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 639838.0
If we subtract 0 from 0, we 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.

In conclusion, the division gives 639838.0 with a balance of 0.0.