We're dividing 420431 by 5 
We're looking to find how many times 5 goes into 420431.

Let's proceed to step 1:
5 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 5

On to step 2:
The number 5 fits into 42 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 40 from 42 leaves us with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 5

Moving on to step 3:
5 can be fit into 20 4 times, resulting in a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 84.0
If we take 20 away from 20, we end up with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 5

Step 4:
The number 5 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 840.0
If we subtract 0 from 4, we get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 5

Step 5:
If we divide 43 by 5, we get 8 and a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 8408.0
Subtracting 40 from 43 leaves us with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 5

Let's proceed to step 6:
5 goes into 31 6 times with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 84086.0
The remainder is 1 after subtracting 30 from 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
The number 5 fits into 10 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 84086.2
If we subtract 10 from 10, 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.

Going ahead to step 8:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 84086.2
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.

Step 9:
If we divide 0 by 5, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 84086.2
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 84086.2 and a remainder of 0.0.