21059 divided by 81 
Let's see how many times 81 fits into 21059.

Let's proceed to step 1:
If we divide 2 by 81, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 81

Going ahead to step 2:
If we divide 21 by 81, 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.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 81

Advancing to step 3:
The number 81 fits into 210 2 times, leaving a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 162 from 210 and we're left with 48.
Grab the next digit (5) from the dividend, add it to 48, then carry on: 485 / 81

Step 4:
81 can be fit into 485 5 times, resulting in a remainder of 80.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we subtract 405 from 485, we get 80.
Grab the next digit (9) from the dividend, add it to 80, then carry on: 809 / 81

On to step 5:
81 can be fit into 809 9 times, resulting in a remainder of 80.
Put 9 as the next digit of the answer. 
Result so far: 259.0
The remainder is 80 after subtracting 729 from 809.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 6:
81 goes into 800 9 times with a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 259.9
The remainder is 71 after subtracting 729 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 7:
When dividing 710 by 81, we get 8 with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 259.98
Deduct 648 from 710 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 8:
81 can be fit into 620 7 times, resulting in a remainder of 53.
The next digit of our result is 7. 
Result so far: 259.987
Subtracting 567 from 620 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 9:
81 can be fit into 530 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 259.9876
Subtract 486 from 530 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 10:
If we divide 440 by 81, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 259.98765
If we subtract 405 from 440, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
81 goes into 350 4 times with a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 259.987654
Subtract 324 from 350 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 12:
The number 81 fits into 260 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 259.9876543
Subtract 243 from 260 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 13:
If we divide 170 by 81, we get 2 and a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 259.98765432
Deduct 162 from 170 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 259.98765432 with a balance of 8e-09.