Let's divide 21108561 by 591
We're looking to find how many times 591 goes into 21108561.

Let's proceed to step 1:
If we divide 2 by 591, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 591

Moving on to step 2:
If we divide 21 by 591, we get 0 and a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (1) from the dividend, attach it to 21 and continue: 211 / 591

Let's proceed to step 3:
591 can be fit into 211 0 times, resulting in a remainder of 211.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 211, we get 211.
Take the next digit (0) from the dividend and append it to 211, then repeat: 2110 / 591

Advancing to step 4:
If we divide 2110 by 591, we get 3 and a remainder of 337.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 1773 from 2110 leaves us with 337.
Include the next digit (8) from the dividend after 337, then repeat: 3378 / 591

Step 5:
If we divide 3378 by 591, we get 5 and a remainder of 423.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Subtract 2955 from 3378 to get 423.
Grab the next digit (5) from the dividend, add it to 423, then carry on: 4235 / 591

Moving on to step 6:
If we divide 4235 by 591, we get 7 and a remainder of 98.
Put 7 as the next digit of the answer. 
Result so far: 357.0
Subtract 4137 from 4235 to get 98.
Bring next digit (6) of the dividend behind the 98 and repeat the process: 986 / 591

Let's proceed to step 7:
If we divide 986 by 591, we get 1 and a remainder of 395.
The number 1 becomes the next digit in our result. 
Result so far: 3571.0
Deduct 591 from 986 and we're left with 395.
Append the next digit (1) from the dividend to 395 and continue with: 3951 / 591

On to step 8:
When dividing 3951 by 591, we get 6 with a remainder of 405.
The number 6 becomes the next digit in our result. 
Result so far: 35716.0
If we subtract 3546 from 3951, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Going ahead to step 9:
When dividing 4050 by 591, we get 6 with a remainder of 504.
Record the quotient 6 as the next digit in the result. 
Result so far: 35716.6
If we take 3546 away from 4050, we end up with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

On to step 10:
591 goes into 5040 8 times with a remainder of 312.
Record the quotient 8 as the next digit in the result. 
Result so far: 35716.68
If we take 4728 away from 5040, we end up with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Going ahead to step 11:
591 goes into 3120 5 times with a remainder of 165.
Put 5 as the next digit of the answer. 
Result so far: 35716.685
If we subtract 2955 from 3120, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 12:
If we divide 1650 by 591, we get 2 and a remainder of 468.
The next digit of our result is 2. 
Result so far: 35716.6852
Subtract 1182 from 1650 to get 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

On to step 13:
591 goes into 4680 7 times with a remainder of 543.
Write down 7 as next digit of the result. 
Result so far: 35716.68527
If we take 4137 away from 4680, we end up with 543.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5430, and continue the process.

On to step 14:
If we divide 5430 by 591, we get 9 and a remainder of 111.
Record the quotient 9 as the next digit in the result. 
Result so far: 35716.685279
The remainder is 111 after subtracting 5319 from 5430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Going ahead to step 15:
591 can be fit into 1110 1 times, resulting in a remainder of 519.
Record the quotient 1 as the next digit in the result. 
Result so far: 35716.6852791
If we take 591 away from 1110, we end up with 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

On to step 16:
591 can be fit into 5190 8 times, resulting in a remainder of 462.
The number 8 becomes the next digit in our result. 
Result so far: 35716.68527918
Subtract 4728 from 5190 to get 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

In conclusion, the division gives 35716.68527918 with a balance of 4.62e-07.