We're dividing 215236 by 18 
We're looking to find how many times 18 goes into 215236.

Going ahead to step 1:
2 divided by 18 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 18

On to step 2:
If we divide 21 by 18, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 18 from 21 leaves us with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 18

Step 3:
When dividing 35 by 18, we get 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 17 after subtracting 18 from 35.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 18

Let's proceed to step 4:
18 can be fit into 172 9 times, resulting in a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 119.0
Deduct 162 from 172 and we're left with 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 18

Step 5:
If we divide 103 by 18, we get 5 and a remainder of 13.
The next digit of our result is 5. 
Result so far: 1195.0
The remainder is 13 after subtracting 90 from 103.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 18

Step 6:
If we divide 136 by 18, we get 7 and a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 11957.0
If we subtract 126 from 136, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
If we divide 100 by 18, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 11957.5
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
18 can be fit into 100 5 times, resulting in a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 11957.55
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 11957.55 with a remainder of 0.01.