Let's divide 21881274 by 561
We want to figure out the number of times 21881274 can be divided by 561.

On to step 1:
If we divide 2 by 561, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 561

Going ahead to step 2:
When dividing 21 by 561, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 561

Moving on to step 3:
When dividing 218 by 561, we get 0 with a remainder of 218.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 218 and we're left with 218.
Fetch the next digit (8) from the dividend, attach it to 218 and continue: 2188 / 561

Moving on to step 4:
561 can be fit into 2188 3 times, resulting in a remainder of 505.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 1683 from 2188, we get 505.
Include the next digit (1) from the dividend after 505, then repeat: 5051 / 561

Let's proceed to step 5:
561 can be fit into 5051 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 39.0
If we take 5049 away from 5051, we end up with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 561

Going ahead to step 6:
561 can be fit into 22 0 times, resulting in a remainder of 22.
The number 0 becomes the next digit in our result. 
Result so far: 390.0
Subtracting 0 from 22 leaves us with 22.
Fetch the next digit (7) from the dividend, attach it to 22 and continue: 227 / 561

On to step 7:
When dividing 227 by 561, we get 0 with a remainder of 227.
Write down 0 as next digit of the result. 
Result so far: 3900.0
If we take 0 away from 227, we end up with 227.
Take the next digit (4) from the dividend and append it to 227, then repeat: 2274 / 561

Going ahead to step 8:
The number 561 fits into 2274 4 times, leaving a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 39004.0
If we take 2244 away from 2274, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
The number 561 fits into 300 0 times, leaving a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 39004.0
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 10:
If we divide 3000 by 561, we get 5 and a remainder of 195.
Put 5 as the next digit of the answer. 
Result so far: 39004.05
Subtract 2805 from 3000 to get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Advancing to step 11:
If we divide 1950 by 561, we get 3 and a remainder of 267.
Put 3 as the next digit of the answer. 
Result so far: 39004.053
If we take 1683 away from 1950, we end up with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Advancing to step 12:
If we divide 2670 by 561, we get 4 and a remainder of 426.
Record the quotient 4 as the next digit in the result. 
Result so far: 39004.0534
Deduct 2244 from 2670 and we're left with 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Going ahead to step 13:
The number 561 fits into 4260 7 times, leaving a remainder of 333.
Record the quotient 7 as the next digit in the result. 
Result so far: 39004.05347
If we take 3927 away from 4260, we end up with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Advancing to step 14:
When dividing 3330 by 561, we get 5 with a remainder of 525.
The next digit of our result is 5. 
Result so far: 39004.053475
Subtract 2805 from 3330 to get 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

On to step 15:
561 can be fit into 5250 9 times, resulting in a remainder of 201.
The next digit of our result is 9. 
Result so far: 39004.0534759
Subtracting 5049 from 5250 leaves us with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Going ahead to step 16:
If we divide 2010 by 561, we get 3 and a remainder of 327.
The number 3 becomes the next digit in our result. 
Result so far: 39004.05347593
If we take 1683 away from 2010, we end up with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

The quotient of the division is 39004.05347593, and the remainder is 3.27e-07.