We look at the division of 11235 by 21 
Let's see how many times 21 fits into 11235.

Let's proceed to step 1:
21 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 21

Moving on to step 2:
21 can be fit into 11 0 times, resulting in a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 11, we get 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 21

Moving on to step 3:
21 goes into 112 5 times with a remainder of 7.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 7 after subtracting 105 from 112.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 21

Let's proceed to step 4:
When dividing 73 by 21, we get 3 with a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 53.0
The remainder is 10 after subtracting 63 from 73.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 21

Step 5:
When dividing 105 by 21, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 535.0
Subtract 105 from 105 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 6:
21 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 535.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
When dividing 0 by 21, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 535.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 535.0, with a leftover of 0.0.