We're dividing 394309 by 80 
Let's see how many times 80 fits into 394309.

Advancing to step 1:
When dividing 3 by 80, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 80

Step 2:
80 can be fit into 39 0 times, resulting in a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Append the next digit (4) from the dividend to 39 and continue with: 394 / 80

Advancing to step 3:
80 goes into 394 4 times with a remainder of 74.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 74 after subtracting 320 from 394.
Include the next digit (3) from the dividend after 74, then repeat: 743 / 80

Step 4:
80 goes into 743 9 times with a remainder of 23.
Use 9 as the next digit of our solution. 
Result so far: 49.0
Subtracting 720 from 743 leaves us with 23.
Append the next digit (0) from the dividend to 23 and continue with: 230 / 80

Let's proceed to step 5:
If we divide 230 by 80, we get 2 and a remainder of 70.
The next digit of our result is 2. 
Result so far: 492.0
The remainder is 70 after subtracting 160 from 230.
Take the next digit (9) from the dividend and append it to 70, then repeat: 709 / 80

On to step 6:
80 can be fit into 709 8 times, resulting in a remainder of 69.
The next digit of our result is 8. 
Result so far: 4928.0
Deduct 640 from 709 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 7:
690 divided by 80 is 8 with a remainder of 50.
Use 8 as the next digit of our solution. 
Result so far: 4928.8
If we subtract 640 from 690, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
The number 80 fits into 500 6 times, leaving a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 4928.86
Subtract 480 from 500 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.

Going ahead to step 9:
When dividing 200 by 80, we get 2 with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 4928.862
Deduct 160 from 200 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
80 goes into 400 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 4928.8625
If we subtract 400 from 400, 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.

Advancing to step 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4928.8625
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.

Going ahead to step 12:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4928.8625
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.

The quotient of the division is 4928.8625, and the remainder is 0.0.