We're dividing 799840 by 80 
Let's see how many times 80 fits into 799840.

Step 1:
7 divided by 80 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 80

On to step 2:
The number 80 fits into 79 0 times, leaving a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Bring next digit (9) of the dividend behind the 79 and repeat the process: 799 / 80

On to step 3:
80 can be fit into 799 9 times, resulting in a remainder of 79.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 720 from 799, we get 79.
Take the next digit (8) from the dividend and append it to 79, then repeat: 798 / 80

Let's proceed to step 4:
When dividing 798 by 80, we get 9 with a remainder of 78.
Use 9 as the next digit of our solution. 
Result so far: 99.0
Subtract 720 from 798 to get 78.
Append the next digit (4) from the dividend to 78 and continue with: 784 / 80

On to step 5:
When dividing 784 by 80, we get 9 with a remainder of 64.
Use 9 as the next digit of our solution. 
Result so far: 999.0
If we subtract 720 from 784, we get 64.
Append the next digit (0) from the dividend to 64 and continue with: 640 / 80

Going ahead to step 6:
640 divided by 80 is 8 with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 9998.0
The remainder is 0 after subtracting 640 from 640.
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 7:
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: 9998.0
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.

Going ahead to step 8:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 9998.0
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 final outcome is 9998.0, with a leftover of 0.0.