491049 divided by 21 
We want to divide 491049 by 21.

Moving on to step 1:
21 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 21

Advancing to step 2:
21 goes into 49 2 times with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 42 from 49 to get 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 21

Going ahead to step 3:
When dividing 71 by 21, we get 3 with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 23.0
Deduct 63 from 71 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 21

Moving on to step 4:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 233.0
If we take 63 away from 80, we end up with 17.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 21

Going ahead to step 5:
21 goes into 174 8 times with a remainder of 6.
The next digit of our result is 8. 
Result so far: 2338.0
The remainder is 6 after subtracting 168 from 174.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 21

Moving on to step 6:
69 divided by 21 is 3 with a remainder of 6.
The next digit of our result is 3. 
Result so far: 23383.0
The remainder is 6 after subtracting 63 from 69.
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 7:
60 divided by 21 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 23383.2
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
If we divide 180 by 21, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 23383.28
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
The number 21 fits into 120 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 23383.285
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 10:
When dividing 150 by 21, we get 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 23383.2857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
30 divided by 21 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 23383.28571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 12:
If we divide 90 by 21, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 23383.285714
If we take 84 away from 90, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 23383.2857142
Deduct 42 from 60 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 14:
21 goes into 180 8 times with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 23383.28571428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 23383.28571428 and a remainder of 1.2e-08.