We look at the division of 24649 by 21 
Let's see how many times 21 fits into 24649.

Step 1:
If we divide 2 by 21, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 21

Step 2:
24 divided by 21 is 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 21 away from 24, we end up with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 21

Advancing to step 3:
If we divide 36 by 21, we get 1 and a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we subtract 21 from 36, we get 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 21

On to step 4:
21 can be fit into 154 7 times, resulting in a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 117.0
If we take 147 away from 154, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

Moving on to step 5:
If we divide 79 by 21, we get 3 and a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 1173.0
Subtract 63 from 79 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.

On to step 6:
If we divide 160 by 21, we get 7 and a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 1173.7
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
21 goes into 130 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 1173.76
If we subtract 126 from 130, we 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.

On to step 8:
The number 21 fits into 40 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1173.761
Subtracting 21 from 40 leaves us with 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 9:
If we divide 190 by 21, we get 9 and a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 1173.7619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
10 divided by 21 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 1173.7619
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.

Advancing to step 11:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 1173.761904
Subtracting 84 from 100 leaves us 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.

Advancing to step 12:
If we divide 160 by 21, we get 7 and a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 1173.7619047
If we subtract 147 from 160, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 13:
When dividing 130 by 21, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 1173.76190476
Deduct 126 from 130 and we're left with 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 outcome is 1173.76190476, with a leftover of 4e-09.