We divide 81531 by 91
Our goal is to divide 81531 by 91.

Advancing to step 1:
91 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 91

Going ahead to step 2:
When dividing 81 by 91, we get 0 with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Grab the next digit (5) from the dividend, add it to 81, then carry on: 815 / 91

Moving on to step 3:
If we divide 815 by 91, we get 8 and a remainder of 87.
The next digit of our result is 8. 
Result so far: 8.0
If we take 728 away from 815, we end up with 87.
Include the next digit (3) from the dividend after 87, then repeat: 873 / 91

On to step 4:
873 divided by 91 is 9 with a remainder of 54.
Use 9 as the next digit of our solution. 
Result so far: 89.0
The remainder is 54 after subtracting 819 from 873.
Grab the next digit (1) from the dividend, add it to 54, then carry on: 541 / 91

On to step 5:
541 divided by 91 is 5 with a remainder of 86.
Use 5 as the next digit of our solution. 
Result so far: 895.0
If we take 455 away from 541, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Moving on to step 6:
91 can be fit into 860 9 times, resulting in a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 895.9
If we take 819 away from 860, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 7:
410 divided by 91 is 4 with a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 895.94
If we subtract 364 from 410, we get 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 8:
When dividing 460 by 91, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 895.945
If we take 455 away from 460, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
If we divide 50 by 91, we get 0 and a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 895.945
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 10:
The number 91 fits into 500 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 895.94505
The remainder is 45 after subtracting 455 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 11:
The number 91 fits into 450 4 times, leaving a remainder of 86.
The number 4 becomes the next digit in our result. 
Result so far: 895.945054
Deduct 364 from 450 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 12:
When dividing 860 by 91, we get 9 with a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 895.9450549
If we subtract 819 from 860, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 13:
91 can be fit into 410 4 times, resulting in a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 895.94505494
If we take 364 away from 410, we end up 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.

After the division, we end up with 895.94505494 and a remainder of 4.6e-08.