991163 ÷ 90 
We want to figure out the number of times 991163 can be divided by 90.

On to step 1:
90 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 90

Advancing to step 2:
If we divide 99 by 90, we get 1 and a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 90 from 99 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 90

Moving on to step 3:
91 divided by 90 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtracting 90 from 91 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 90

On to step 4:
The number 90 fits into 11 0 times, leaving a remainder of 11.
The next digit of our result is 0. 
Result so far: 110.0
Deduct 0 from 11 and we're left with 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 90

Advancing to step 5:
If we divide 116 by 90, we get 1 and a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1101.0
Subtracting 90 from 116 leaves us with 26.
Take the next digit (3) from the dividend and append it to 26, then repeat: 263 / 90

Step 6:
90 can be fit into 263 2 times, resulting in a remainder of 83.
The number 2 becomes the next digit in our result. 
Result so far: 11012.0
Deduct 180 from 263 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

On to step 7:
830 divided by 90 is 9 with a remainder of 20.
Write down 9 as next digit of the result. 
Result so far: 11012.9
Deduct 810 from 830 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
90 goes into 200 2 times with a remainder of 20.
The next digit of our result is 2. 
Result so far: 11012.92
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
90 can be fit into 200 2 times, resulting in a remainder of 20.
The next digit of our result is 2. 
Result so far: 11012.922
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 11012.922 with a balance of 0.002.