423422 divided by 80 
We want to figure out the number of times 423422 can be divided by 80.

Going ahead to step 1:
80 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 80

Let's proceed to step 2:
80 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Bring next digit (3) of the dividend behind the 42 and repeat the process: 423 / 80

Let's proceed to step 3:
If we divide 423 by 80, we get 5 and a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 400 from 423 and we're left with 23.
Bring next digit (4) of the dividend behind the 23 and repeat the process: 234 / 80

Moving on to step 4:
The number 80 fits into 234 2 times, leaving a remainder of 74.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
If we subtract 160 from 234, we get 74.
Bring next digit (2) of the dividend behind the 74 and repeat the process: 742 / 80

Let's proceed to step 5:
80 can be fit into 742 9 times, resulting in a remainder of 22.
The number 9 becomes the next digit in our result. 
Result so far: 529.0
The remainder is 22 after subtracting 720 from 742.
Bring next digit (2) of the dividend behind the 22 and repeat the process: 222 / 80

Going ahead to step 6:
80 can be fit into 222 2 times, resulting in a remainder of 62.
Write down 2 as next digit of the result. 
Result so far: 5292.0
Deduct 160 from 222 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 7:
If we divide 620 by 80, we get 7 and a remainder of 60.
Use 7 as the next digit of our solution. 
Result so far: 5292.7
If we subtract 560 from 620, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
If we divide 600 by 80, we get 7 and a remainder of 40.
The next digit of our result is 7. 
Result so far: 5292.77
If we subtract 560 from 600, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 5292.77 and a remainder of 0.04.