11849455 divided by 21 
We want to figure out the number of times 11849455 can be divided by 21.

Step 1:
1 divided by 21 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 21

On to step 2:
21 goes into 11 0 times with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 11 to get 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 21

Advancing to step 3:
21 can be fit into 118 5 times, resulting in a remainder of 13.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 105 from 118, we get 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 21

Moving on to step 4:
21 goes into 134 6 times with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
Subtract 126 from 134 to get 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 21

Step 5:
When dividing 89 by 21, we get 4 with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 564.0
If we take 84 away from 89, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 21

Going ahead to step 6:
When dividing 54 by 21, we get 2 with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 5642.0
Subtract 42 from 54 to get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 21

On to step 7:
If we divide 125 by 21, we get 5 and a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 56425.0
If we take 105 away from 125, we end up with 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 21

Going ahead to step 8:
21 can be fit into 205 9 times, resulting in a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 564259.0
Subtract 189 from 205 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 9:
160 divided by 21 is 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 564259.7
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 10:
If we divide 130 by 21, we get 6 and a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 564259.76
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 11:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 564259.761
If we subtract 21 from 40, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 12:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 564259.7619
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 13:
10 divided by 21 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 564259.7619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
100 divided by 21 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 564259.761904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 15:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 564259.7619047
Subtracting 147 from 160 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 16:
21 goes into 130 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 564259.76190476
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 564259.76190476 with a remainder of 4e-09.