We divide 215223 by 90
Let's see how many times 90 fits into 215223.

Step 1:
If we divide 2 by 90, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 90

Advancing to step 2:
90 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 90

Let's proceed to step 3:
When dividing 215 by 90, we get 2 with a remainder of 35.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 180 from 215 leaves us with 35.
Bring next digit (2) of the dividend behind the 35 and repeat the process: 352 / 90

Let's proceed to step 4:
The number 90 fits into 352 3 times, leaving a remainder of 82.
Write down 3 as next digit of the result. 
Result so far: 23.0
Subtracting 270 from 352 leaves us with 82.
Take the next digit (2) from the dividend and append it to 82, then repeat: 822 / 90

Let's proceed to step 5:
The number 90 fits into 822 9 times, leaving a remainder of 12.
Write down 9 as next digit of the result. 
Result so far: 239.0
Subtracting 810 from 822 leaves us with 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 90

Step 6:
The number 90 fits into 123 1 times, leaving a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 2391.0
Subtract 90 from 123 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.

Step 7:
90 can be fit into 330 3 times, resulting in a remainder of 60.
The next digit of our result is 3. 
Result so far: 2391.3
If we subtract 270 from 330, 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:
90 goes into 600 6 times with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 2391.36
Deduct 540 from 600 and we're left 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.

On to step 9:
90 can be fit into 600 6 times, resulting in a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 2391.366
Deduct 540 from 600 and we're left 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.

After the division, we end up with 2391.366 and a remainder of 0.006.