We divide 79920 by 80
Let's see how many times 80 fits into 79920.

Advancing to step 1:
If we divide 7 by 80, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 80

Let's proceed to step 2:
When dividing 79 by 80, we get 0 with a remainder of 79.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Take the next digit (9) from the dividend and append it to 79, then repeat: 799 / 80

Moving on to step 3:
The number 80 fits into 799 9 times, leaving a remainder of 79.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 720 away from 799, we end up with 79.
Include the next digit (2) from the dividend after 79, then repeat: 792 / 80

Advancing to step 4:
The number 80 fits into 792 9 times, leaving a remainder of 72.
The number 9 becomes the next digit in our result. 
Result so far: 99.0
If we subtract 720 from 792, we get 72.
Append the next digit (0) from the dividend to 72 and continue with: 720 / 80

Moving on to step 5:
80 can be fit into 720 9 times, resulting in a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 999.0
Subtract 720 from 720 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.

Step 6:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 999.0
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.

Let's proceed to step 7:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 999.0
Deduct 0 from 0 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.

The quotient of the division is 999.0, and the remainder is 0.0.