We look at the division of 312452 by 80 
Our goal is to divide 312452 by 80.

Going ahead 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
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 80

Let's proceed to step 2:
If we divide 31 by 80, we get 0 and a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Bring next digit (2) of the dividend behind the 31 and repeat the process: 312 / 80

Step 3:
If we divide 312 by 80, we get 3 and a remainder of 72.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 240 away from 312, we end up with 72.
Take the next digit (4) from the dividend and append it to 72, then repeat: 724 / 80

Moving on to step 4:
80 goes into 724 9 times with a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 39.0
The remainder is 4 after subtracting 720 from 724.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 80

Going ahead to step 5:
When dividing 45 by 80, we get 0 with a remainder of 45.
The next digit of our result is 0. 
Result so far: 390.0
If we take 0 away from 45, we end up with 45.
Include the next digit (2) from the dividend after 45, then repeat: 452 / 80

On to step 6:
When dividing 452 by 80, we get 5 with a remainder of 52.
The next digit of our result is 5. 
Result so far: 3905.0
If we take 400 away from 452, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 7:
If we divide 520 by 80, we get 6 and a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 3905.6
Deduct 480 from 520 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 8:
400 divided by 80 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 3905.65
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.

On to step 9:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 3905.65
The remainder is 0 after subtracting 0 from 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 10:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3905.65
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 final outcome is 3905.65, with a leftover of 0.0.