We divide 81009 by 99
We're looking to find how many times 99 goes into 81009.

On to step 1:
If we divide 8 by 99, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 99

Step 2:
If we divide 81 by 99, we get 0 and a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Append the next digit (0) from the dividend to 81 and continue with: 810 / 99

On to step 3:
If we divide 810 by 99, we get 8 and a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 18 after subtracting 792 from 810.
Grab the next digit (0) from the dividend, add it to 18, then carry on: 180 / 99

Let's proceed to step 4:
The number 99 fits into 180 1 times, leaving a remainder of 81.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
The remainder is 81 after subtracting 99 from 180.
Append the next digit (9) from the dividend to 81 and continue with: 819 / 99

Moving on to step 5:
If we divide 819 by 99, we get 8 and a remainder of 27.
The next digit of our result is 8. 
Result so far: 818.0
If we take 792 away from 819, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 6:
When dividing 270 by 99, we get 2 with a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 818.2
Deduct 198 from 270 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 7:
99 goes into 720 7 times with a remainder of 27.
Use 7 as the next digit of our solution. 
Result so far: 818.27
Deduct 693 from 720 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 8:
99 goes into 270 2 times with a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 818.272
The remainder is 72 after subtracting 198 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 9:
If we divide 720 by 99, we get 7 and a remainder of 27.
The next digit of our result is 7. 
Result so far: 818.2727
Subtract 693 from 720 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 10:
99 goes into 270 2 times with a remainder of 72.
The next digit of our result is 2. 
Result so far: 818.27272
Subtracting 198 from 270 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 11:
99 goes into 720 7 times with a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 818.272727
If we take 693 away from 720, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
99 can be fit into 270 2 times, resulting in a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 818.2727272
If we take 198 away from 270, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 13:
The number 99 fits into 720 7 times, leaving a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 818.27272727
If we take 693 away from 720, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 818.27272727, with a leftover of 2.7e-08.