Let's divide 18573 by 90
We want to divide 18573 by 90.

Step 1:
When dividing 1 by 90, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 90

Moving on to step 2:
If we divide 18 by 90, we get 0 and a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Append the next digit (5) from the dividend to 18 and continue with: 185 / 90

Step 3:
The number 90 fits into 185 2 times, leaving a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 180 from 185, we get 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 90

On to step 4:
90 goes into 57 0 times with a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtracting 0 from 57 leaves us with 57.
Append the next digit (3) from the dividend to 57 and continue with: 573 / 90

Going ahead to step 5:
The number 90 fits into 573 6 times, leaving a remainder of 33.
Use 6 as the next digit of our solution. 
Result so far: 206.0
Subtract 540 from 573 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 6:
If we divide 330 by 90, we get 3 and a remainder of 60.
The next digit of our result is 3. 
Result so far: 206.3
Subtracting 270 from 330 leaves us 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.

Let's proceed to step 7:
When dividing 600 by 90, we get 6 with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 206.36
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 8:
When dividing 600 by 90, we get 6 with a remainder of 60.
The next digit of our result is 6. 
Result so far: 206.366
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 206.366 and a remainder of 0.006.