We divide 638688 by 10
We want to figure out the number of times 638688 can be divided by 10.

Going ahead to step 1:
If we divide 6 by 10, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 10

On to step 2:
If we divide 63 by 10, we get 6 and a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 60 away from 63, we end up with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 10

On to step 3:
The number 10 fits into 38 3 times, leaving a remainder of 8.
The next digit of our result is 3. 
Result so far: 63.0
Subtract 30 from 38 to get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 10

Let's proceed to step 4:
10 goes into 86 8 times with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 638.0
If we take 80 away from 86, we end up with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 10

Step 5:
68 divided by 10 is 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 6386.0
Subtract 60 from 68 to get 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 10

Step 6:
If we divide 88 by 10, we get 8 and a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 63868.0
If we subtract 80 from 88, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
10 goes into 80 8 times with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 63868.8
Subtracting 80 from 80 leaves us 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.

Moving on to step 8:
0 divided by 10 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 63868.8
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.

On to step 9:
10 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 63868.8
The remainder is 0 after subtracting 0 from 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 63868.8, and the remainder is 0.0.