Let's divide 639008 by 4
We want to figure out the number of times 639008 can be divided by 4.

Going ahead to step 1:
The number 4 fits into 6 1 times, leaving a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 4 from 6 leaves us with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 4

On to step 2:
When dividing 23 by 4, we get 5 with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 20 from 23, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 4

Going ahead to step 3:
4 can be fit into 39 9 times, resulting in a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 159.0
Deduct 36 from 39 and we're left with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 4

Going ahead to step 4:
4 can be fit into 30 7 times, resulting in a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 1597.0
Subtract 28 from 30 to get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 4

Let's proceed to step 5:
If we divide 20 by 4, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 15975.0
If we take 20 away from 20, we end up with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 4

Going ahead to step 6:
The number 4 fits into 8 2 times, leaving a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 159752.0
If we subtract 8 from 8, 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.

Moving on to step 7:
4 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 159752.0
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.

Step 8:
4 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 159752.0
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.

Our division results in 159752.0 with a remaining 0.0.