991574 divided by 80 
We want to divide 991574 by 80.

Advancing to step 1:
80 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 80

Advancing to step 2:
80 can be fit into 99 1 times, resulting in a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 80 from 99 to get 19.
Append the next digit (1) from the dividend to 19 and continue with: 191 / 80

Advancing to step 3:
The number 80 fits into 191 2 times, leaving a remainder of 31.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 160 from 191 and we're left with 31.
Append the next digit (5) from the dividend to 31 and continue with: 315 / 80

Step 4:
80 goes into 315 3 times with a remainder of 75.
Write down 3 as next digit of the result. 
Result so far: 123.0
Deduct 240 from 315 and we're left with 75.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 80

On to step 5:
When dividing 757 by 80, we get 9 with a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 1239.0
The remainder is 37 after subtracting 720 from 757.
Append the next digit (4) from the dividend to 37 and continue with: 374 / 80

Let's proceed to step 6:
When dividing 374 by 80, we get 4 with a remainder of 54.
Put 4 as the next digit of the answer. 
Result so far: 12394.0
Subtract 320 from 374 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 7:
540 divided by 80 is 6 with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 12394.6
Deduct 480 from 540 and we're left 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.

Moving on to step 8:
If we divide 600 by 80, we get 7 and a remainder of 40.
The next digit of our result is 7. 
Result so far: 12394.67
Deduct 560 from 600 and we're left with 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 9:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 12394.675
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.

Step 10:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12394.675
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.

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: 12394.675
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 outcome is 12394.675, with a leftover of 0.0.