350980 divided by 80 
Our goal is to divide 350980 by 80.

Let's proceed to step 1:
3 divided by 80 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 80

Moving on to step 2:
35 divided by 80 is 0 with a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 35 after subtracting 0 from 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 80

Going ahead to step 3:
350 divided by 80 is 4 with a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 320 from 350 leaves us with 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 80

Step 4:
When dividing 309 by 80, we get 3 with a remainder of 69.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
If we take 240 away from 309, we end up with 69.
Include the next digit (8) from the dividend after 69, then repeat: 698 / 80

Going ahead to step 5:
The number 80 fits into 698 8 times, leaving a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 438.0
Subtracting 640 from 698 leaves us with 58.
Include the next digit (0) from the dividend after 58, then repeat: 580 / 80

Going ahead to step 6:
When dividing 580 by 80, we get 7 with a remainder of 20.
The next digit of our result is 7. 
Result so far: 4387.0
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.

Going ahead to step 7:
80 can be fit into 200 2 times, resulting in a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 4387.2
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.

Step 8:
If we divide 400 by 80, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 4387.25
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.

Let's proceed to step 9:
If we divide 0 by 80, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4387.25
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:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4387.25
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.

The final result is 4387.25 with a remainder of 0.0.