We look at the division of 21535391 by 223 
We want to figure out the number of times 21535391 can be divided by 223.

Moving on to step 1:
If we divide 2 by 223, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 223

Moving on to step 2:
If we divide 21 by 223, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 223

Step 3:
The number 223 fits into 215 0 times, leaving a remainder of 215.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 215, we end up with 215.
Grab the next digit (3) from the dividend, add it to 215, then carry on: 2153 / 223

Advancing to step 4:
The number 223 fits into 2153 9 times, leaving a remainder of 146.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 2007 from 2153 leaves us with 146.
Take the next digit (5) from the dividend and append it to 146, then repeat: 1465 / 223

Moving on to step 5:
If we divide 1465 by 223, we get 6 and a remainder of 127.
Write down 6 as next digit of the result. 
Result so far: 96.0
Deduct 1338 from 1465 and we're left with 127.
Include the next digit (3) from the dividend after 127, then repeat: 1273 / 223

Let's proceed to step 6:
223 can be fit into 1273 5 times, resulting in a remainder of 158.
Use 5 as the next digit of our solution. 
Result so far: 965.0
If we subtract 1115 from 1273, we get 158.
Include the next digit (9) from the dividend after 158, then repeat: 1589 / 223

Advancing to step 7:
223 goes into 1589 7 times with a remainder of 28.
Record the quotient 7 as the next digit in the result. 
Result so far: 9657.0
If we subtract 1561 from 1589, we get 28.
Include the next digit (1) from the dividend after 28, then repeat: 281 / 223

Going ahead to step 8:
223 goes into 281 1 times with a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 96571.0
Subtract 223 from 281 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 9:
223 can be fit into 580 2 times, resulting in a remainder of 134.
Use 2 as the next digit of our solution. 
Result so far: 96571.2
Subtracting 446 from 580 leaves us with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Step 10:
The number 223 fits into 1340 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 96571.26
If we subtract 1338 from 1340, 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.

Step 11:
223 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 96571.26
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 12:
When dividing 200 by 223, we get 0 with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 96571.26
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 96571.26 with a remaining 0.002.