We divide 350310 by 80
We want to divide 350310 by 80.

On to step 1:
3 divided by 80 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 80

Step 2:
80 goes into 35 0 times with a remainder of 35.
Put 0 as the next digit of the answer. 
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

Moving on to step 3:
The number 80 fits into 350 4 times, leaving a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 320 away from 350, we end up with 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 80

Going ahead to step 4:
80 goes into 303 3 times with a remainder of 63.
Use 3 as the next digit of our solution. 
Result so far: 43.0
If we take 240 away from 303, we end up with 63.
Include the next digit (1) from the dividend after 63, then repeat: 631 / 80

Let's proceed to step 5:
When dividing 631 by 80, we get 7 with a remainder of 71.
Use 7 as the next digit of our solution. 
Result so far: 437.0
Deduct 560 from 631 and we're left with 71.
Append the next digit (0) from the dividend to 71 and continue with: 710 / 80

On to step 6:
80 goes into 710 8 times with a remainder of 70.
Use 8 as the next digit of our solution. 
Result so far: 4378.0
Subtract 640 from 710 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 7:
If we divide 700 by 80, we get 8 and a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 4378.8
Subtract 640 from 700 to 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.

Moving on to step 8:
80 can be fit into 600 7 times, resulting in a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 4378.87
Subtracting 560 from 600 leaves us 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.

Going ahead to step 9:
400 divided by 80 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4378.875
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 10:
If we divide 0 by 80, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4378.875
Subtracting 0 from 0 leaves us 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 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4378.875
Subtracting 0 from 0 leaves us 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 4378.875, and the remainder is 0.0.