We look at the division of 638985 by 8 
We want to divide 638985 by 8.

Moving on to step 1:
8 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 8

Moving on to step 2:
If we divide 63 by 8, we get 7 and a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 56 away from 63, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 8

Advancing to step 3:
If we divide 78 by 8, we get 9 and a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 79.0
Deduct 72 from 78 and we're left with 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 8

On to step 4:
The number 8 fits into 69 8 times, leaving a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 798.0
Deduct 64 from 69 and we're left with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 8

On to step 5:
The number 8 fits into 58 7 times, leaving a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 7987.0
The remainder is 2 after subtracting 56 from 58.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 8

Step 6:
8 can be fit into 25 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 79873.0
If we take 24 away from 25, we end up 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:
8 goes into 10 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 79873.1
The remainder is 2 after subtracting 8 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
When dividing 20 by 8, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 79873.12
If we subtract 16 from 20, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
When dividing 40 by 8, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 79873.125
The remainder is 0 after subtracting 40 from 40.
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 10:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 79873.125
Subtracting 0 from 0 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.

Advancing to step 11:
If we divide 0 by 8, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 79873.125
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.

The quotient of the division is 79873.125, and the remainder is 0.0.