We look at the division of 553728 by 21 
We want to divide 553728 by 21.

Step 1:
When dividing 5 by 21, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 21

Going ahead to step 2:
55 divided by 21 is 2 with a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 42 from 55 to get 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 21

Step 3:
When dividing 133 by 21, we get 6 with a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Subtract 126 from 133 to get 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 21

Let's proceed to step 4:
77 divided by 21 is 3 with a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 263.0
Subtracting 63 from 77 leaves us with 14.
Append the next digit (2) from the dividend to 14 and continue with: 142 / 21

Going ahead to step 5:
When dividing 142 by 21, we get 6 with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 2636.0
Subtract 126 from 142 to get 16.
Grab the next digit (8) from the dividend, add it to 16, then carry on: 168 / 21

Moving on to step 6:
When dividing 168 by 21, we get 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 26368.0
The remainder is 0 after subtracting 168 from 168.
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 7:
If we divide 0 by 21, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26368.0
If we subtract 0 from 0, we 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.

Moving on to step 8:
21 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 26368.0
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.

After the division, we end up with 26368.0 and a remainder of 0.0.