Let's divide 639710 by 1
We're looking to find how many times 1 goes into 639710.

Moving on to step 1:
1 can be fit into 6 6 times, resulting in a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 6 from 6 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 1

Step 2:
1 goes into 3 3 times with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 63.0
If we subtract 3 from 3, we get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 1

On to step 3:
1 can be fit into 9 9 times, resulting in a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 639.0
Deduct 9 from 9 and we're left with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 1

Let's proceed to step 4:
The number 1 fits into 7 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 6397.0
Subtracting 7 from 7 leaves us with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 1

Let's proceed to step 5:
If we divide 1 by 1, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 63971.0
If we take 1 away from 1, we end up with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 1

Moving on to step 6:
1 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 639710.0
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.

On to step 7:
1 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 639710.0
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.

Let's proceed to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 639710.0
Deduct 0 from 0 and we're left 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.

The final result is 639710.0 with a remainder of 0.0.