We look at the division of 128809 by 81 
We're looking to find how many times 81 goes into 128809.

On to step 1:
1 divided by 81 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 81

Going ahead to step 2:
If we divide 12 by 81, we get 0 and a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 81

Moving on to step 3:
When dividing 128 by 81, we get 1 with a remainder of 47.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 81 from 128 leaves us with 47.
Grab the next digit (8) from the dividend, add it to 47, then carry on: 478 / 81

Moving on to step 4:
If we divide 478 by 81, we get 5 and a remainder of 73.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 405 from 478, we get 73.
Include the next digit (0) from the dividend after 73, then repeat: 730 / 81

Going ahead to step 5:
The number 81 fits into 730 9 times, leaving a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 159.0
If we take 729 away from 730, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 81

Step 6:
81 goes into 19 0 times with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 1590.0
If we subtract 0 from 19, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
The number 81 fits into 190 2 times, leaving a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 1590.2
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 8:
280 divided by 81 is 3 with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 1590.23
Subtracting 243 from 280 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 9:
If we divide 370 by 81, we get 4 and a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 1590.234
Deduct 324 from 370 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 10:
81 can be fit into 460 5 times, resulting in a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 1590.2345
Subtracting 405 from 460 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 11:
550 divided by 81 is 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 1590.23456
If we subtract 486 from 550, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 12:
When dividing 640 by 81, we get 7 with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 1590.234567
Deduct 567 from 640 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 13:
If we divide 730 by 81, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 1590.2345679
If we subtract 729 from 730, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 14:
81 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 1590.2345679
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 1590.2345679 with a remaining 1e-08.