We divide 21556249 by 809
Our goal is to divide 21556249 by 809.

Step 1:
If we divide 2 by 809, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 809

Going ahead to step 2:
809 can be fit into 21 0 times, resulting in a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 809

Advancing to step 3:
When dividing 215 by 809, we get 0 with a remainder of 215.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 215, we end up with 215.
Take the next digit (5) from the dividend and append it to 215, then repeat: 2155 / 809

Advancing to step 4:
2155 divided by 809 is 2 with a remainder of 537.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 537 after subtracting 1618 from 2155.
Bring next digit (6) of the dividend behind the 537 and repeat the process: 5376 / 809

Going ahead to step 5:
If we divide 5376 by 809, we get 6 and a remainder of 522.
Write down 6 as next digit of the result. 
Result so far: 26.0
Deduct 4854 from 5376 and we're left with 522.
Bring next digit (2) of the dividend behind the 522 and repeat the process: 5222 / 809

Advancing to step 6:
If we divide 5222 by 809, we get 6 and a remainder of 368.
The next digit of our result is 6. 
Result so far: 266.0
Deduct 4854 from 5222 and we're left with 368.
Append the next digit (4) from the dividend to 368 and continue with: 3684 / 809

Let's proceed to step 7:
3684 divided by 809 is 4 with a remainder of 448.
Use 4 as the next digit of our solution. 
Result so far: 2664.0
If we subtract 3236 from 3684, we get 448.
Grab the next digit (9) from the dividend, add it to 448, then carry on: 4489 / 809

On to step 8:
809 goes into 4489 5 times with a remainder of 444.
Use 5 as the next digit of our solution. 
Result so far: 26645.0
The remainder is 444 after subtracting 4045 from 4489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Let's proceed to step 9:
809 goes into 4440 5 times with a remainder of 395.
Record the quotient 5 as the next digit in the result. 
Result so far: 26645.5
Subtract 4045 from 4440 to get 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Advancing to step 10:
809 can be fit into 3950 4 times, resulting in a remainder of 714.
Record the quotient 4 as the next digit in the result. 
Result so far: 26645.54
If we take 3236 away from 3950, we end up with 714.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7140, and continue the process.

Let's proceed to step 11:
809 goes into 7140 8 times with a remainder of 668.
Record the quotient 8 as the next digit in the result. 
Result so far: 26645.548
Subtracting 6472 from 7140 leaves us with 668.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

Step 12:
When dividing 6680 by 809, we get 8 with a remainder of 208.
The number 8 becomes the next digit in our result. 
Result so far: 26645.5488
Subtracting 6472 from 6680 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

The quotient of the division is 26645.5488, and the remainder is 0.00208.