We divide 421908 by 5
We want to divide 421908 by 5.

Let's proceed to step 1:
If we divide 4 by 5, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 5

Step 2:
5 can be fit into 42 8 times, resulting in a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 40 from 42 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 5

Going ahead to step 3:
The number 5 fits into 21 4 times, leaving a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 84.0
If we take 20 away from 21, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 5

Moving on to step 4:
5 goes into 19 3 times with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 843.0
Subtracting 15 from 19 leaves us with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 5

Moving on to step 5:
5 goes into 40 8 times with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 8438.0
The remainder is 0 after subtracting 40 from 40.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 5

Moving on to step 6:
The number 5 fits into 8 1 times, leaving a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 84381.0
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.
Write down 6 as next digit of the result. 
Result so far: 84381.6
The remainder is 0 after subtracting 30 from 30.
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:
5 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: 84381.6
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.

Step 9:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 84381.6
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.

After the division, we end up with 84381.6 and a remainder of 0.0.