We look at the division of 642320 by 8 
We want to divide 642320 by 8.

Advancing to step 1:
6 divided by 8 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 8

Advancing to step 2:
64 divided by 8 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 64 from 64 to get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 8

Let's proceed to step 3:
The number 8 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 8

Moving on to step 4:
If we divide 23 by 8, we get 2 and a remainder of 7.
The next digit of our result is 2. 
Result so far: 802.0
Deduct 16 from 23 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 8

Going ahead to step 5:
8 goes into 72 9 times with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 8029.0
Subtract 72 from 72 to get 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 8

Moving on to step 6:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 80290.0
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.

Advancing to step 7:
8 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 80290.0
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.

Let's proceed to step 8:
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: 80290.0
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.

After the division, we end up with 80290.0 and a remainder of 0.0.