We divide 81991 by 65
We're looking to find how many times 65 goes into 81991.

On to step 1:
65 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 65

Step 2:
65 goes into 81 1 times with a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 65 from 81 leaves us with 16.
Grab the next digit (9) from the dividend, add it to 16, then carry on: 169 / 65

Advancing to step 3:
If we divide 169 by 65, we get 2 and a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 130 away from 169, we end up with 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 65

Let's proceed to step 4:
65 can be fit into 399 6 times, resulting in a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 126.0
If we subtract 390 from 399, we get 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 65

Moving on to step 5:
65 can be fit into 91 1 times, resulting in a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 1261.0
If we subtract 65 from 91, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 6:
If we divide 260 by 65, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 1261.4
The remainder is 0 after subtracting 260 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
If we divide 0 by 65, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1261.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
65 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1261.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 1261.4 and a remainder of 0.0.