We divide 21910081 by 518
We want to figure out the number of times 21910081 can be divided by 518.

Moving on to step 1:
2 divided by 518 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 518

On to step 2:
518 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 518

Moving on to step 3:
219 divided by 518 is 0 with a remainder of 219.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 219 and we're left with 219.
Include the next digit (1) from the dividend after 219, then repeat: 2191 / 518

Going ahead to step 4:
518 goes into 2191 4 times with a remainder of 119.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 2072 from 2191 leaves us with 119.
Grab the next digit (0) from the dividend, add it to 119, then carry on: 1190 / 518

On to step 5:
The number 518 fits into 1190 2 times, leaving a remainder of 154.
The next digit of our result is 2. 
Result so far: 42.0
Subtract 1036 from 1190 to get 154.
Fetch the next digit (0) from the dividend, attach it to 154 and continue: 1540 / 518

Step 6:
1540 divided by 518 is 2 with a remainder of 504.
The number 2 becomes the next digit in our result. 
Result so far: 422.0
If we take 1036 away from 1540, we end up with 504.
Fetch the next digit (8) from the dividend, attach it to 504 and continue: 5048 / 518

Advancing to step 7:
When dividing 5048 by 518, we get 9 with a remainder of 386.
The number 9 becomes the next digit in our result. 
Result so far: 4229.0
The remainder is 386 after subtracting 4662 from 5048.
Take the next digit (1) from the dividend and append it to 386, then repeat: 3861 / 518

Moving on to step 8:
518 can be fit into 3861 7 times, resulting in a remainder of 235.
Put 7 as the next digit of the answer. 
Result so far: 42297.0
Subtracting 3626 from 3861 leaves us with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Going ahead to step 9:
2350 divided by 518 is 4 with a remainder of 278.
The next digit of our result is 4. 
Result so far: 42297.4
If we subtract 2072 from 2350, we get 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Going ahead to step 10:
The number 518 fits into 2780 5 times, leaving a remainder of 190.
The number 5 becomes the next digit in our result. 
Result so far: 42297.45
Subtract 2590 from 2780 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 11:
518 goes into 1900 3 times with a remainder of 346.
Use 3 as the next digit of our solution. 
Result so far: 42297.453
Subtracting 1554 from 1900 leaves us with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Step 12:
3460 divided by 518 is 6 with a remainder of 352.
The next digit of our result is 6. 
Result so far: 42297.4536
Subtracting 3108 from 3460 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Going ahead to step 13:
The number 518 fits into 3520 6 times, leaving a remainder of 412.
The next digit of our result is 6. 
Result so far: 42297.45366
If we take 3108 away from 3520, we end up with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

After the division, we end up with 42297.45366 and a remainder of 0.000412.