81109162 divided by 815 
Let's see how many times 815 fits into 81109162.

Advancing to step 1:
If we divide 8 by 815, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 815

Moving on to step 2:
When dividing 81 by 815, we get 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Include the next digit (1) from the dividend after 81, then repeat: 811 / 815

Advancing to step 3:
If we divide 811 by 815, we get 0 and a remainder of 811.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 811, we end up with 811.
Bring next digit (0) of the dividend behind the 811 and repeat the process: 8110 / 815

On to step 4:
815 can be fit into 8110 9 times, resulting in a remainder of 775.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtract 7335 from 8110 to get 775.
Bring next digit (9) of the dividend behind the 775 and repeat the process: 7759 / 815

On to step 5:
If we divide 7759 by 815, we get 9 and a remainder of 424.
Write down 9 as next digit of the result. 
Result so far: 99.0
Subtracting 7335 from 7759 leaves us with 424.
Fetch the next digit (1) from the dividend, attach it to 424 and continue: 4241 / 815

Moving on to step 6:
The number 815 fits into 4241 5 times, leaving a remainder of 166.
The next digit of our result is 5. 
Result so far: 995.0
Subtract 4075 from 4241 to get 166.
Include the next digit (6) from the dividend after 166, then repeat: 1666 / 815

Going ahead to step 7:
The number 815 fits into 1666 2 times, leaving a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 9952.0
Deduct 1630 from 1666 and we're left with 36.
Include the next digit (2) from the dividend after 36, then repeat: 362 / 815

Advancing to step 8:
362 divided by 815 is 0 with a remainder of 362.
The next digit of our result is 0. 
Result so far: 99520.0
If we take 0 away from 362, we end up with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 9:
815 goes into 3620 4 times with a remainder of 360.
Write down 4 as next digit of the result. 
Result so far: 99520.4
Subtracting 3260 from 3620 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 10:
If we divide 3600 by 815, we get 4 and a remainder of 340.
The number 4 becomes the next digit in our result. 
Result so far: 99520.44
Subtracting 3260 from 3600 leaves us with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

The final result is 99520.44 with a remainder of 0.34.