We look at the division of 91075884 by 81 
Let's see how many times 81 fits into 91075884.

Step 1:
If we divide 9 by 81, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 81

Step 2:
If we divide 91 by 81, we get 1 and a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 10 after subtracting 81 from 91.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 81

Going ahead to step 3:
The number 81 fits into 100 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtract 81 from 100 to get 19.
Grab the next digit (7) from the dividend, add it to 19, then carry on: 197 / 81

Advancing to step 4:
If we divide 197 by 81, we get 2 and a remainder of 35.
Record the quotient 2 as the next digit in the result. 
Result so far: 112.0
If we take 162 away from 197, we end up with 35.
Grab the next digit (5) from the dividend, add it to 35, then carry on: 355 / 81

Moving on to step 5:
355 divided by 81 is 4 with a remainder of 31.
Record the quotient 4 as the next digit in the result. 
Result so far: 1124.0
Subtract 324 from 355 to get 31.
Include the next digit (8) from the dividend after 31, then repeat: 318 / 81

Going ahead to step 6:
81 goes into 318 3 times with a remainder of 75.
The next digit of our result is 3. 
Result so far: 11243.0
The remainder is 75 after subtracting 243 from 318.
Take the next digit (8) from the dividend and append it to 75, then repeat: 758 / 81

On to step 7:
When dividing 758 by 81, we get 9 with a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 112439.0
Subtracting 729 from 758 leaves us with 29.
Take the next digit (4) from the dividend and append it to 29, then repeat: 294 / 81

On to step 8:
81 can be fit into 294 3 times, resulting in a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 1124393.0
Subtract 243 from 294 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 9:
If we divide 510 by 81, we get 6 and a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 1124393.6
If we subtract 486 from 510, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
If we divide 240 by 81, we get 2 and a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 1124393.62
If we subtract 162 from 240, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 11:
81 goes into 780 9 times with a remainder of 51.
Record the quotient 9 as the next digit in the result. 
Result so far: 1124393.629
If we take 729 away from 780, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 12:
81 can be fit into 510 6 times, resulting in a remainder of 24.
The next digit of our result is 6. 
Result so far: 1124393.6296
Deduct 486 from 510 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 13:
The number 81 fits into 240 2 times, leaving a remainder of 78.
Write down 2 as next digit of the result. 
Result so far: 1124393.62962
Deduct 162 from 240 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 14:
81 can be fit into 780 9 times, resulting in a remainder of 51.
Write down 9 as next digit of the result. 
Result so far: 1124393.629629
Subtract 729 from 780 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 15:
510 divided by 81 is 6 with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 1124393.6296296
The remainder is 24 after subtracting 486 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 16:
If we divide 240 by 81, we get 2 and a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 1124393.62962962
Deduct 162 from 240 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The quotient of the division is 1124393.62962962, and the remainder is 7.8e-08.