21858039 ÷ 11 
Let's see how many times 11 fits into 21858039.

Let's proceed to step 1:
The number 11 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 11

Moving on to step 2:
21 divided by 11 is 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 11 from 21 to get 10.
Include the next digit (8) from the dividend after 10, then repeat: 108 / 11

Advancing to step 3:
11 goes into 108 9 times with a remainder of 9.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 99 from 108 and we're left with 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 11

On to step 4:
When dividing 95 by 11, we get 8 with a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 198.0
The remainder is 7 after subtracting 88 from 95.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 11

Going ahead to step 5:
78 divided by 11 is 7 with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 1987.0
If we subtract 77 from 78, we get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 11

Advancing to step 6:
When dividing 10 by 11, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 19870.0
The remainder is 10 after subtracting 0 from 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 11

Moving on to step 7:
The number 11 fits into 103 9 times, leaving a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 198709.0
If we take 99 away from 103, we end up with 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 11

Going ahead to step 8:
11 can be fit into 49 4 times, resulting in a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 1987094.0
The remainder is 5 after subtracting 44 from 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
When dividing 50 by 11, we get 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 1987094.4
The remainder is 6 after subtracting 44 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
When dividing 60 by 11, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 1987094.45
Subtracting 55 from 60 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 11:
11 goes into 50 4 times with a remainder of 6.
The next digit of our result is 4. 
Result so far: 1987094.454
Subtract 44 from 50 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
When dividing 60 by 11, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 1987094.4545
Subtracting 55 from 60 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
The number 11 fits into 50 4 times, leaving a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 1987094.45454
Subtract 44 from 50 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 14:
11 can be fit into 60 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 1987094.454545
Subtract 55 from 60 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 15:
11 goes into 50 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 1987094.4545454
If we subtract 44 from 50, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 16:
11 goes into 60 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 1987094.45454545
If we take 55 away from 60, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 1987094.45454545 with a balance of 5e-09.