We look at the division of 640971 by 8 
We want to divide 640971 by 8.

On to step 1:
If we divide 6 by 8, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 8

Going ahead to step 2:
If we divide 64 by 8, we get 8 and a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 0 after subtracting 64 from 64.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 8

On to step 3:
8 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 80.0
Subtracting 0 from 0 leaves us with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 8

Let's proceed to step 4:
8 goes into 9 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 801.0
Deduct 8 from 9 and we're left with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 8

Let's proceed to step 5:
When dividing 17 by 8, we get 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 8012.0
The remainder is 1 after subtracting 16 from 17.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 8

Step 6:
11 divided by 8 is 1 with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 80121.0
If we subtract 8 from 11, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
When dividing 30 by 8, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 80121.3
Deduct 24 from 30 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
The number 8 fits into 60 7 times, leaving a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 80121.37
Subtract 56 from 60 to 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.

Moving on to step 9:
If we divide 40 by 8, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 80121.375
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.

Advancing to step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 80121.375
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.

Let's proceed to step 11:
The number 8 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 80121.375
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.

Our division results in 80121.375 with a remaining 0.0.