639633 divided by 8 
We're looking to find how many times 8 goes into 639633.

Advancing to step 1:
If we divide 6 by 8, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 8

Step 2:
The number 8 fits into 63 7 times, leaving a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 56 from 63 to get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 8

Going ahead to step 3:
If we divide 79 by 8, we get 9 and a remainder of 7.
The next digit of our result is 9. 
Result so far: 79.0
The remainder is 7 after subtracting 72 from 79.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 8

Moving on to step 4:
When dividing 76 by 8, we get 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 799.0
If we take 72 away from 76, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 8

Let's proceed to step 5:
43 divided by 8 is 5 with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 7995.0
Subtract 40 from 43 to get 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 8

Step 6:
When dividing 33 by 8, we get 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 79954.0
If we take 32 away from 33, 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.

Let's proceed to step 7:
The number 8 fits into 10 1 times, leaving a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 79954.1
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:
8 can be fit into 20 2 times, resulting in a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 79954.12
Subtracting 16 from 20 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
8 can be fit into 40 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 79954.125
Subtract 40 from 40 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.

Advancing to step 10:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 79954.125
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:
0 divided by 8 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 79954.125
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.

The quotient of the division is 79954.125, and the remainder is 0.0.