We look at the division of 21003252 by 554 
Let's see how many times 554 fits into 21003252.

On to step 1:
The number 554 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 554

Moving on to step 2:
The number 554 fits into 21 0 times, leaving a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 554

Advancing to step 3:
210 divided by 554 is 0 with a remainder of 210.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 210 to get 210.
Grab the next digit (0) from the dividend, add it to 210, then carry on: 2100 / 554

Let's proceed to step 4:
2100 divided by 554 is 3 with a remainder of 438.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 1662 from 2100 and we're left with 438.
Fetch the next digit (3) from the dividend, attach it to 438 and continue: 4383 / 554

Advancing to step 5:
If we divide 4383 by 554, we get 7 and a remainder of 505.
The next digit of our result is 7. 
Result so far: 37.0
Subtracting 3878 from 4383 leaves us with 505.
Bring next digit (2) of the dividend behind the 505 and repeat the process: 5052 / 554

Let's proceed to step 6:
5052 divided by 554 is 9 with a remainder of 66.
Use 9 as the next digit of our solution. 
Result so far: 379.0
If we take 4986 away from 5052, we end up with 66.
Append the next digit (5) from the dividend to 66 and continue with: 665 / 554

On to step 7:
665 divided by 554 is 1 with a remainder of 111.
The next digit of our result is 1. 
Result so far: 3791.0
Subtract 554 from 665 to get 111.
Take the next digit (2) from the dividend and append it to 111, then repeat: 1112 / 554

Moving on to step 8:
554 goes into 1112 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 37912.0
Subtract 1108 from 1112 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
554 goes into 40 0 times with a remainder of 40.
The next digit of our result is 0. 
Result so far: 37912.0
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
554 can be fit into 400 0 times, resulting in a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 37912.0
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 37912.0 and a remainder of 0.4.