We look at the division of 989871 by 80 
Our goal is to divide 989871 by 80.

Advancing to step 1:
80 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 80

On to step 2:
80 can be fit into 98 1 times, resulting in a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 80 away from 98, we end up with 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 80

On to step 3:
When dividing 189 by 80, we get 2 with a remainder of 29.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 160 from 189 and we're left with 29.
Append the next digit (8) from the dividend to 29 and continue with: 298 / 80

On to step 4:
80 can be fit into 298 3 times, resulting in a remainder of 58.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
If we subtract 240 from 298, we get 58.
Take the next digit (7) from the dividend and append it to 58, then repeat: 587 / 80

Advancing to step 5:
587 divided by 80 is 7 with a remainder of 27.
The next digit of our result is 7. 
Result so far: 1237.0
Deduct 560 from 587 and we're left with 27.
Take the next digit (1) from the dividend and append it to 27, then repeat: 271 / 80

On to step 6:
The number 80 fits into 271 3 times, leaving a remainder of 31.
Write down 3 as next digit of the result. 
Result so far: 12373.0
Subtract 240 from 271 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 7:
310 divided by 80 is 3 with a remainder of 70.
The next digit of our result is 3. 
Result so far: 12373.3
Subtract 240 from 310 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 8:
When dividing 700 by 80, we get 8 with a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 12373.38
Subtracting 640 from 700 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
If we divide 600 by 80, we get 7 and a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 12373.387
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 10:
80 goes into 400 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 12373.3875
The remainder is 0 after subtracting 400 from 400.
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 11:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12373.3875
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.

Advancing to step 12:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12373.3875
If we take 0 away from 0, 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.

The final result is 12373.3875 with a remainder of 0.0.