We look at the division of 642008 by 5 
We're looking to find how many times 5 goes into 642008.

On to step 1:
If we divide 6 by 5, we get 1 and a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 5 from 6, we get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 5

Going ahead to step 2:
14 divided by 5 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 10 from 14 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 5

Going ahead to step 3:
5 goes into 42 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 128.0
Deduct 40 from 42 and we're left with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 5

Let's proceed to step 4:
The number 5 fits into 20 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 1284.0
The remainder is 0 after subtracting 20 from 20.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 5

Let's proceed to step 5:
0 divided by 5 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12840.0
The remainder is 0 after subtracting 0 from 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 5

Moving on to step 6:
5 goes into 8 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 128401.0
If we subtract 5 from 8, 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.

Let's proceed to step 7:
30 divided by 5 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 128401.6
If we subtract 30 from 30, 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.

Let's proceed to step 8:
When dividing 0 by 5, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 128401.6
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.

Advancing to step 9:
0 divided by 5 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 128401.6
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.

Our division results in 128401.6 with a remaining 0.0.