We look at the division of 497039 by 21 
We want to figure out the number of times 497039 can be divided by 21.

Moving on to step 1:
The number 21 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 21

Step 2:
If we divide 49 by 21, we get 2 and a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 42 from 49, we get 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 21

Step 3:
21 can be fit into 77 3 times, resulting in a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
If we take 63 away from 77, we end up with 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 21

Let's proceed to step 4:
If we divide 140 by 21, we get 6 and a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 236.0
The remainder is 14 after subtracting 126 from 140.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 21

Step 5:
21 can be fit into 143 6 times, resulting in a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 2366.0
Deduct 126 from 143 and we're left with 17.
Grab the next digit (9) from the dividend, add it to 17, then carry on: 179 / 21

Advancing to step 6:
If we divide 179 by 21, we get 8 and a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 23668.0
Subtract 168 from 179 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 23668.5
Subtracting 105 from 110 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.

Moving on to step 8:
21 goes into 50 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 23668.52
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
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: 23668.523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
When dividing 170 by 21, we get 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 23668.5238
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
The number 21 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 23668.5238
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 12:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 23668.523809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 13:
21 goes into 110 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 23668.5238095
Subtracting 105 from 110 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.

Step 14:
If we divide 50 by 21, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 23668.52380952
If we subtract 42 from 50, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 23668.52380952, and the remainder is 8e-09.