We divide 309288 by 80
We want to divide 309288 by 80.

Moving on to step 1:
If we divide 3 by 80, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 80

Let's proceed to step 2:
The number 80 fits into 30 0 times, leaving a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 80

Let's proceed to step 3:
80 can be fit into 309 3 times, resulting in a remainder of 69.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 240 away from 309, we end up with 69.
Bring next digit (2) of the dividend behind the 69 and repeat the process: 692 / 80

Going ahead to step 4:
If we divide 692 by 80, we get 8 and a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Subtract 640 from 692 to get 52.
Fetch the next digit (8) from the dividend, attach it to 52 and continue: 528 / 80

On to step 5:
528 divided by 80 is 6 with a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 386.0
Subtracting 480 from 528 leaves us with 48.
Grab the next digit (8) from the dividend, add it to 48, then carry on: 488 / 80

Let's proceed to step 6:
The number 80 fits into 488 6 times, leaving a remainder of 8.
The next digit of our result is 6. 
Result so far: 3866.0
Subtracting 480 from 488 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
80 can be fit into 80 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 3866.1
The remainder is 0 after subtracting 80 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3866.1
If we take 0 away from 0, we end up 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.

On to step 9:
80 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3866.1
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.

The final result is 3866.1 with a remainder of 0.0.