901091 divided by 80 
Our goal is to divide 901091 by 80.

Advancing to step 1:
9 divided by 80 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 80

Moving on to step 2:
80 goes into 90 1 times with a remainder of 10.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 80 from 90 and we're left with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 80

Step 3:
If we divide 101 by 80, we get 1 and a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 80 from 101 and we're left with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 80

Advancing to step 4:
80 goes into 210 2 times with a remainder of 50.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
If we take 160 away from 210, we end up with 50.
Bring next digit (9) of the dividend behind the 50 and repeat the process: 509 / 80

Going ahead to step 5:
When dividing 509 by 80, we get 6 with a remainder of 29.
Use 6 as the next digit of our solution. 
Result so far: 1126.0
Deduct 480 from 509 and we're left with 29.
Bring next digit (1) of the dividend behind the 29 and repeat the process: 291 / 80

Let's proceed to step 6:
80 can be fit into 291 3 times, resulting in a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 11263.0
If we subtract 240 from 291, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 7:
The number 80 fits into 510 6 times, leaving a remainder of 30.
The next digit of our result is 6. 
Result so far: 11263.6
If we take 480 away from 510, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
The number 80 fits into 300 3 times, leaving a remainder of 60.
The number 3 becomes the next digit in our result. 
Result so far: 11263.63
If we take 240 away from 300, we end up 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:
600 divided by 80 is 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 11263.637
Subtract 560 from 600 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.

Let's proceed to step 10:
400 divided by 80 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 11263.6375
Deduct 400 from 400 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:
When dividing 0 by 80, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 11263.6375
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 12:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 11263.6375
Subtracting 0 from 0 leaves us 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.

Our division results in 11263.6375 with a remaining 0.0.