Let's divide 20331 by 90
We're looking to find how many times 90 goes into 20331.

Going ahead to step 1:
When dividing 2 by 90, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 90

Let's proceed to step 2:
90 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Bring next digit (3) of the dividend behind the 20 and repeat the process: 203 / 90

Going ahead to step 3:
If we divide 203 by 90, we get 2 and a remainder of 23.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 180 from 203, we get 23.
Take the next digit (3) from the dividend and append it to 23, then repeat: 233 / 90

Advancing to step 4:
If we divide 233 by 90, we get 2 and a remainder of 53.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtracting 180 from 233 leaves us with 53.
Fetch the next digit (1) from the dividend, attach it to 53 and continue: 531 / 90

Let's proceed to step 5:
90 can be fit into 531 5 times, resulting in a remainder of 81.
The next digit of our result is 5. 
Result so far: 225.0
Deduct 450 from 531 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 6:
90 can be fit into 810 9 times, resulting in a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 225.9
Subtracting 810 from 810 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.

Let's proceed to step 7:
0 divided by 90 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 225.9
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.

Going ahead to step 8:
The number 90 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 225.9
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.

In conclusion, the division gives 225.9 with a balance of 0.0.