We look at the division of 21595 by 81 
Let's see how many times 81 fits into 21595.

Let's proceed to step 1:
81 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 81

On to step 2:
The number 81 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 81

Step 3:
If we divide 215 by 81, we get 2 and a remainder of 53.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 162 from 215, we get 53.
Include the next digit (9) from the dividend after 53, then repeat: 539 / 81

Step 4:
If we divide 539 by 81, we get 6 and a remainder of 53.
Use 6 as the next digit of our solution. 
Result so far: 26.0
The remainder is 53 after subtracting 486 from 539.
Append the next digit (5) from the dividend to 53 and continue with: 535 / 81

Let's proceed to step 5:
If we divide 535 by 81, we get 6 and a remainder of 49.
Put 6 as the next digit of the answer. 
Result so far: 266.0
Subtract 486 from 535 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 6:
81 goes into 490 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 266.6
Subtract 486 from 490 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.

On to step 7:
40 divided by 81 is 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 266.6
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
81 can be fit into 400 4 times, resulting in a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 266.604
Deduct 324 from 400 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 9:
The number 81 fits into 760 9 times, leaving a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 266.6049
If we subtract 729 from 760, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 10:
310 divided by 81 is 3 with a remainder of 67.
The number 3 becomes the next digit in our result. 
Result so far: 266.60493
If we take 243 away from 310, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 11:
670 divided by 81 is 8 with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 266.604938
If we subtract 648 from 670, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
The number 81 fits into 220 2 times, leaving a remainder of 58.
The next digit of our result is 2. 
Result so far: 266.6049382
If we subtract 162 from 220, we 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 13:
580 divided by 81 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 266.60493827
If we take 567 away from 580, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 266.60493827 with a remainder of 1.3e-08.