We look at the division of 431609 by 80 
Our goal is to divide 431609 by 80.

Moving on to step 1:
When dividing 4 by 80, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 80

On to step 2:
80 goes into 43 0 times with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Fetch the next digit (1) from the dividend, attach it to 43 and continue: 431 / 80

Step 3:
The number 80 fits into 431 5 times, leaving a remainder of 31.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 31 after subtracting 400 from 431.
Append the next digit (6) from the dividend to 31 and continue with: 316 / 80

On to step 4:
316 divided by 80 is 3 with a remainder of 76.
The next digit of our result is 3. 
Result so far: 53.0
The remainder is 76 after subtracting 240 from 316.
Grab the next digit (0) from the dividend, add it to 76, then carry on: 760 / 80

Let's proceed to step 5:
80 can be fit into 760 9 times, resulting in a remainder of 40.
The next digit of our result is 9. 
Result so far: 539.0
Subtracting 720 from 760 leaves us with 40.
Bring next digit (9) of the dividend behind the 40 and repeat the process: 409 / 80

Let's proceed to step 6:
When dividing 409 by 80, we get 5 with a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 5395.0
Subtract 400 from 409 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
90 divided by 80 is 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 5395.1
If we subtract 80 from 90, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
100 divided by 80 is 1 with a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 5395.11
Subtract 80 from 100 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 5395.11 with a remaining 0.02.