215435 divided by 18 
We want to figure out the number of times 215435 can be divided by 18.

Moving on to step 1:
If we divide 2 by 18, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 18

Advancing to step 2:
If we divide 21 by 18, we get 1 and a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 18 from 21 to get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 18

Moving on to step 3:
18 goes into 35 1 times with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 18 from 35, we get 17.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 18

Moving on to step 4:
18 goes into 174 9 times with a remainder of 12.
Put 9 as the next digit of the answer. 
Result so far: 119.0
The remainder is 12 after subtracting 162 from 174.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 18

Going ahead to step 5:
18 can be fit into 123 6 times, resulting in a remainder of 15.
Use 6 as the next digit of our solution. 
Result so far: 1196.0
If we take 108 away from 123, we end up with 15.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 18

Advancing to step 6:
The number 18 fits into 155 8 times, leaving a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 11968.0
Subtract 144 from 155 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
When dividing 110 by 18, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 11968.6
Subtracting 108 from 110 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
20 divided by 18 is 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 11968.61
Subtract 18 from 20 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 9:
The number 18 fits into 20 1 times, leaving a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 11968.611
If we subtract 18 from 20, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 11968.611, with a leftover of 0.0002.