We look at the division of 78972 by 80 
We're looking to find how many times 80 goes into 78972.

Advancing to step 1:
80 can be fit into 7 0 times, resulting in 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.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 80

Step 2:
When dividing 78 by 80, we get 0 with a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (9) from the dividend after 78, then repeat: 789 / 80

On to step 3:
The number 80 fits into 789 9 times, leaving a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 720 from 789 and we're left with 69.
Take the next digit (7) from the dividend and append it to 69, then repeat: 697 / 80

Step 4:
80 goes into 697 8 times with a remainder of 57.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
Subtracting 640 from 697 leaves us with 57.
Include the next digit (2) from the dividend after 57, then repeat: 572 / 80

Step 5:
If we divide 572 by 80, we get 7 and a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 987.0
Subtract 560 from 572 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 6:
When dividing 120 by 80, we get 1 with a remainder of 40.
Put 1 as the next digit of the answer. 
Result so far: 987.1
Subtract 80 from 120 to get 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 7:
When dividing 400 by 80, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 987.15
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.

Let's proceed to step 8:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 987.15
If we subtract 0 from 0, we 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 9:
80 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 987.15
If we subtract 0 from 0, we 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.

After the division, we end up with 987.15 and a remainder of 0.0.