496828 divided by 21 
Our goal is to divide 496828 by 21.

Step 1:
When dividing 4 by 21, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 21

Going ahead to step 2:
21 can be fit into 49 2 times, resulting in a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 42 from 49 to get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 21

Step 3:
When dividing 76 by 21, we get 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
The remainder is 13 after subtracting 63 from 76.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 21

On to step 4:
21 goes into 138 6 times with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 236.0
Subtract 126 from 138 to get 12.
Bring next digit (2) of the dividend behind the 12 and repeat the process: 122 / 21

Let's proceed to step 5:
21 goes into 122 5 times with a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 2365.0
If we subtract 105 from 122, we get 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 21

Going ahead to step 6:
21 goes into 178 8 times with a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 23658.0
Subtracting 168 from 178 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.

Moving on to step 7:
21 goes into 100 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 23658.4
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.

Step 8:
When dividing 160 by 21, we get 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 23658.47
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.

Let's proceed to step 9:
When dividing 130 by 21, we get 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 23658.476
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.

Advancing to step 10:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 23658.4761
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.

On to step 11:
21 can be fit into 190 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 23658.47619
Subtracting 189 from 190 leaves us 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 12:
21 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 23658.47619
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.

Going ahead to step 13:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 23658.4761904
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.

Let's proceed to step 14:
If we divide 160 by 21, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 23658.47619047
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.

The quotient of the division is 23658.47619047, and the remainder is 1.3e-08.