515808 ÷ 80 
We want to figure out the number of times 515808 can be divided by 80.

Going ahead to step 1:
80 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 80

Let's proceed to step 2:
51 divided by 80 is 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Fetch the next digit (5) from the dividend, attach it to 51 and continue: 515 / 80

On to step 3:
The number 80 fits into 515 6 times, leaving a remainder of 35.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 35 after subtracting 480 from 515.
Fetch the next digit (8) from the dividend, attach it to 35 and continue: 358 / 80

Going ahead to step 4:
80 can be fit into 358 4 times, resulting in a remainder of 38.
Put 4 as the next digit of the answer. 
Result so far: 64.0
Subtracting 320 from 358 leaves us with 38.
Bring next digit (0) of the dividend behind the 38 and repeat the process: 380 / 80

On to step 5:
The number 80 fits into 380 4 times, leaving a remainder of 60.
Write down 4 as next digit of the result. 
Result so far: 644.0
If we subtract 320 from 380, we get 60.
Take the next digit (8) from the dividend and append it to 60, then repeat: 608 / 80

Step 6:
80 goes into 608 7 times with a remainder of 48.
The next digit of our result is 7. 
Result so far: 6447.0
The remainder is 48 after subtracting 560 from 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 7:
480 divided by 80 is 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 6447.6
If we take 480 away from 480, 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.

Advancing to step 8:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6447.6
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.

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: 6447.6
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.

The final outcome is 6447.6, with a leftover of 0.0.