We divide 316580 by 80
We want to divide 316580 by 80.

On to step 1:
The number 80 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left 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
Subtract 0 from 31 to get 31.
Grab the next digit (6) from the dividend, add it to 31, then carry on: 316 / 80

Let's proceed to step 3:
When dividing 316 by 80, we get 3 with a remainder of 76.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 240 from 316 to get 76.
Take the next digit (5) from the dividend and append it to 76, then repeat: 765 / 80

Let's proceed to step 4:
80 can be fit into 765 9 times, resulting in a remainder of 45.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Subtract 720 from 765 to get 45.
Fetch the next digit (8) from the dividend, attach it to 45 and continue: 458 / 80

On to step 5:
If we divide 458 by 80, we get 5 and a remainder of 58.
Put 5 as the next digit of the answer. 
Result so far: 395.0
Subtract 400 from 458 to get 58.
Bring next digit (0) of the dividend behind the 58 and repeat the process: 580 / 80

On to step 6:
580 divided by 80 is 7 with a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 3957.0
Deduct 560 from 580 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
If we divide 200 by 80, we get 2 and a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 3957.2
Subtracting 160 from 200 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.

Moving on 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: 3957.25
Subtract 400 from 400 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.

Going ahead to step 9:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3957.25
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.

On 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: 3957.25
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.

In conclusion, the division gives 3957.25 with a balance of 0.0.