Let's divide 21863432 by 809
We want to divide 21863432 by 809.

On to step 1:
The number 809 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 809

On to step 2:
21 divided by 809 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 809

On to step 3:
809 can be fit into 218 0 times, resulting in a remainder of 218.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 218, we end up with 218.
Include the next digit (6) from the dividend after 218, then repeat: 2186 / 809

Advancing to step 4:
If we divide 2186 by 809, we get 2 and a remainder of 568.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 568 after subtracting 1618 from 2186.
Append the next digit (3) from the dividend to 568 and continue with: 5683 / 809

Let's proceed to step 5:
809 goes into 5683 7 times with a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
If we subtract 5663 from 5683, we get 20.
Append the next digit (4) from the dividend to 20 and continue with: 204 / 809

Step 6:
The number 809 fits into 204 0 times, leaving a remainder of 204.
Record the quotient 0 as the next digit in the result. 
Result so far: 270.0
Deduct 0 from 204 and we're left with 204.
Fetch the next digit (3) from the dividend, attach it to 204 and continue: 2043 / 809

On to step 7:
When dividing 2043 by 809, we get 2 with a remainder of 425.
The next digit of our result is 2. 
Result so far: 2702.0
The remainder is 425 after subtracting 1618 from 2043.
Fetch the next digit (2) from the dividend, attach it to 425 and continue: 4252 / 809

Step 8:
809 can be fit into 4252 5 times, resulting in a remainder of 207.
Write down 5 as next digit of the result. 
Result so far: 27025.0
Subtracting 4045 from 4252 leaves us with 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Going ahead to step 9:
809 goes into 2070 2 times with a remainder of 452.
The next digit of our result is 2. 
Result so far: 27025.2
Subtract 1618 from 2070 to get 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Step 10:
When dividing 4520 by 809, we get 5 with a remainder of 475.
Write down 5 as next digit of the result. 
Result so far: 27025.25
Subtracting 4045 from 4520 leaves us with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Let's proceed to step 11:
4750 divided by 809 is 5 with a remainder of 705.
Write down 5 as next digit of the result. 
Result so far: 27025.255
The remainder is 705 after subtracting 4045 from 4750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7050, and continue the process.

After the division, we end up with 27025.255 and a remainder of 0.0705.