81999534 divided by 591 
We want to figure out the number of times 81999534 can be divided by 591.

Step 1:
591 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
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 / 591

Going ahead to step 2:
If we divide 81 by 591, we get 0 and a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Bring next digit (9) of the dividend behind the 81 and repeat the process: 819 / 591

Moving on to step 3:
819 divided by 591 is 1 with a remainder of 228.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 591 from 819 to get 228.
Include the next digit (9) from the dividend after 228, then repeat: 2289 / 591

Moving on to step 4:
2289 divided by 591 is 3 with a remainder of 516.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 1773 from 2289, we get 516.
Fetch the next digit (9) from the dividend, attach it to 516 and continue: 5169 / 591

Step 5:
If we divide 5169 by 591, we get 8 and a remainder of 441.
The number 8 becomes the next digit in our result. 
Result so far: 138.0
Deduct 4728 from 5169 and we're left with 441.
Fetch the next digit (5) from the dividend, attach it to 441 and continue: 4415 / 591

Moving on to step 6:
The number 591 fits into 4415 7 times, leaving a remainder of 278.
Write down 7 as next digit of the result. 
Result so far: 1387.0
If we subtract 4137 from 4415, we get 278.
Grab the next digit (3) from the dividend, add it to 278, then carry on: 2783 / 591

On to step 7:
When dividing 2783 by 591, we get 4 with a remainder of 419.
The number 4 becomes the next digit in our result. 
Result so far: 13874.0
Deduct 2364 from 2783 and we're left with 419.
Fetch the next digit (4) from the dividend, attach it to 419 and continue: 4194 / 591

Advancing to step 8:
When dividing 4194 by 591, we get 7 with a remainder of 57.
Use 7 as the next digit of our solution. 
Result so far: 138747.0
If we take 4137 away from 4194, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 9:
591 goes into 570 0 times with a remainder of 570.
The next digit of our result is 0. 
Result so far: 138747.0
Subtracting 0 from 570 leaves us with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Going ahead to step 10:
If we divide 5700 by 591, we get 9 and a remainder of 381.
Use 9 as the next digit of our solution. 
Result so far: 138747.09
Subtracting 5319 from 5700 leaves us with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Moving on to step 11:
When dividing 3810 by 591, we get 6 with a remainder of 264.
Write down 6 as next digit of the result. 
Result so far: 138747.096
Subtracting 3546 from 3810 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Going ahead to step 12:
When dividing 2640 by 591, we get 4 with a remainder of 276.
The number 4 becomes the next digit in our result. 
Result so far: 138747.0964
If we take 2364 away from 2640, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Step 13:
2760 divided by 591 is 4 with a remainder of 396.
The next digit of our result is 4. 
Result so far: 138747.09644
The remainder is 396 after subtracting 2364 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Our division results in 138747.09644 with a remaining 0.000396.