We're dividing 394980 by 80 
We're looking to find how many times 80 goes into 394980.

Going ahead to step 1:
The number 80 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 80

On to step 2:
80 goes into 39 0 times with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Append the next digit (4) from the dividend to 39 and continue with: 394 / 80

Advancing to step 3:
If we divide 394 by 80, we get 4 and a remainder of 74.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 320 from 394 leaves us with 74.
Bring next digit (9) of the dividend behind the 74 and repeat the process: 749 / 80

Going ahead to step 4:
749 divided by 80 is 9 with a remainder of 29.
The next digit of our result is 9. 
Result so far: 49.0
Subtract 720 from 749 to get 29.
Take the next digit (8) from the dividend and append it to 29, then repeat: 298 / 80

Step 5:
80 goes into 298 3 times with a remainder of 58.
Write down 3 as next digit of the result. 
Result so far: 493.0
Subtracting 240 from 298 leaves us with 58.
Fetch the next digit (0) from the dividend, attach it to 58 and continue: 580 / 80

Advancing to step 6:
80 can be fit into 580 7 times, resulting in a remainder of 20.
Use 7 as the next digit of our solution. 
Result so far: 4937.0
The remainder is 20 after subtracting 560 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
The number 80 fits into 200 2 times, leaving a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 4937.2
The remainder is 40 after subtracting 160 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
If we divide 400 by 80, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4937.25
Deduct 400 from 400 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 9:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4937.25
If we subtract 0 from 0, 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 10:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4937.25
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.

Our division results in 4937.25 with a remaining 0.0.