991936 ÷ 90 
We want to figure out the number of times 991936 can be divided by 90.

On to step 1:
9 divided by 90 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
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 / 90

Step 2:
99 divided by 90 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 90 from 99 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 90

Let's proceed to step 3:
When dividing 91 by 90, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 90 away from 91, we end up with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 90

Going ahead to step 4:
19 divided by 90 is 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 110.0
The remainder is 19 after subtracting 0 from 19.
Append the next digit (3) from the dividend to 19 and continue with: 193 / 90

Moving on to step 5:
90 can be fit into 193 2 times, resulting in a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 1102.0
If we take 180 away from 193, we end up with 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 90

Let's proceed to step 6:
136 divided by 90 is 1 with a remainder of 46.
The next digit of our result is 1. 
Result so far: 11021.0
Deduct 90 from 136 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 7:
If we divide 460 by 90, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 11021.5
Deduct 450 from 460 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
If we divide 100 by 90, we get 1 and a remainder of 10.
The next digit of our result is 1. 
Result so far: 11021.51
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
100 divided by 90 is 1 with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 11021.511
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 11021.511 with a balance of 0.001.