We look at the division of 910990 by 80 
We want to figure out the number of times 910990 can be divided by 80.

Step 1:
When dividing 9 by 80, we get 0 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.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 80

Moving on to step 2:
When dividing 91 by 80, we get 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 80 away from 91, we end up with 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 80

Moving on to step 3:
The number 80 fits into 110 1 times, leaving a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtracting 80 from 110 leaves us with 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 80

Advancing to step 4:
When dividing 309 by 80, we get 3 with a remainder of 69.
The next digit of our result is 3. 
Result so far: 113.0
Subtract 240 from 309 to get 69.
Include the next digit (9) from the dividend after 69, then repeat: 699 / 80

Advancing to step 5:
80 goes into 699 8 times with a remainder of 59.
The next digit of our result is 8. 
Result so far: 1138.0
If we subtract 640 from 699, we get 59.
Grab the next digit (0) from the dividend, add it to 59, then carry on: 590 / 80

Let's proceed to step 6:
The number 80 fits into 590 7 times, leaving a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 11387.0
Subtract 560 from 590 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 7:
When dividing 300 by 80, we get 3 with a remainder of 60.
Put 3 as the next digit of the answer. 
Result so far: 11387.3
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.

Going ahead to step 8:
When dividing 600 by 80, we get 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 11387.37
If we subtract 560 from 600, we 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 9:
80 goes into 400 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 11387.375
If we subtract 400 from 400, 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.

Moving on to step 10:
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: 11387.375
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:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 11387.375
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.

Our division results in 11387.375 with a remaining 0.0.