100911 divided by 80 
We want to divide 100911 by 80.

Let's proceed to step 1:
The number 80 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 80

Let's proceed to step 2:
10 divided by 80 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 80

On to step 3:
100 divided by 80 is 1 with a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 80 from 100 to get 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 80

Let's proceed to step 4:
When dividing 209 by 80, we get 2 with a remainder of 49.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 160 from 209 leaves us with 49.
Bring next digit (1) of the dividend behind the 49 and repeat the process: 491 / 80

On to step 5:
When dividing 491 by 80, we get 6 with a remainder of 11.
Write down 6 as next digit of the result. 
Result so far: 126.0
If we subtract 480 from 491, we get 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 80

On to step 6:
When dividing 111 by 80, we get 1 with a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 1261.0
The remainder is 31 after subtracting 80 from 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 7:
80 can be fit into 310 3 times, resulting in a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 1261.3
If we subtract 240 from 310, we 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.

Step 8:
When dividing 700 by 80, we get 8 with a remainder of 60.
Write down 8 as next digit of the result. 
Result so far: 1261.38
Subtract 640 from 700 to get 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:
600 divided by 80 is 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 1261.387
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.

Step 10:
The number 80 fits into 400 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1261.3875
If we take 400 away from 400, 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.

Step 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 1261.3875
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.

Let's proceed to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1261.3875
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 1261.3875 with a balance of 0.0.