We look at the division of 215174 by 90 
Let's see how many times 90 fits into 215174.

Advancing to step 1:
If we divide 2 by 90, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 90

Let's proceed to step 2:
If we divide 21 by 90, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 90

Step 3:
215 divided by 90 is 2 with a remainder of 35.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 180 away from 215, we end up with 35.
Append the next digit (1) from the dividend to 35 and continue with: 351 / 90

On to step 4:
If we divide 351 by 90, we get 3 and a remainder of 81.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtracting 270 from 351 leaves us with 81.
Bring next digit (7) of the dividend behind the 81 and repeat the process: 817 / 90

Advancing to step 5:
The number 90 fits into 817 9 times, leaving a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 239.0
Subtract 810 from 817 to get 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 90

Going ahead to step 6:
If we divide 74 by 90, we get 0 and a remainder of 74.
Use 0 as the next digit of our solution. 
Result so far: 2390.0
The remainder is 74 after subtracting 0 from 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 7:
When dividing 740 by 90, we get 8 with a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 2390.8
Subtract 720 from 740 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
90 can be fit into 200 2 times, resulting in a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 2390.82
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
200 divided by 90 is 2 with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 2390.822
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 2390.822 with a remaining 0.002.