Let's divide 990664 by 90
We want to divide 990664 by 90.

Going ahead to step 1:
The number 90 fits into 9 0 times, leaving 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.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 90

Advancing to step 2:
90 goes into 99 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 90 from 99, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 90

Going ahead to step 3:
The number 90 fits into 90 1 times, leaving a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 90 from 90 and we're left with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 90

Advancing to step 4:
90 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 110.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 90

Step 5:
If we divide 66 by 90, we get 0 and a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 1100.0
Subtract 0 from 66 to get 66.
Include the next digit (4) from the dividend after 66, then repeat: 664 / 90

Let's proceed to step 6:
When dividing 664 by 90, we get 7 with a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 11007.0
Subtracting 630 from 664 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 7:
340 divided by 90 is 3 with a remainder of 70.
Use 3 as the next digit of our solution. 
Result so far: 11007.3
Subtract 270 from 340 to 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.

Let's proceed to step 8:
700 divided by 90 is 7 with a remainder of 70.
The next digit of our result is 7. 
Result so far: 11007.37
Subtract 630 from 700 to 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.

On to step 9:
90 goes into 700 7 times with a remainder of 70.
Use 7 as the next digit of our solution. 
Result so far: 11007.377
Subtracting 630 from 700 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 11007.377 with a remainder of 0.007.