497865 ÷ 21 
Our goal is to divide 497865 by 21.

Step 1:
4 divided by 21 is 0 with a remainder of 4.
The next digit of our result is 0. 
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

Let's proceed to step 2:
If we divide 49 by 21, we get 2 and a remainder of 7.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 42 from 49 to get 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 21

Let's proceed to step 3:
21 goes into 77 3 times with a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
The remainder is 14 after subtracting 63 from 77.
Take the next digit (8) from the dividend and append it to 14, then repeat: 148 / 21

Going ahead to step 4:
21 can be fit into 148 7 times, resulting in a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 237.0
If we subtract 147 from 148, we get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 21

Step 5:
21 goes into 16 0 times with a remainder of 16.
The next digit of our result is 0. 
Result so far: 2370.0
If we take 0 away from 16, we end up with 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 21

Let's proceed to step 6:
The number 21 fits into 165 7 times, leaving a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 23707.0
If we take 147 away from 165, we end up 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.

Let's proceed to step 7:
180 divided by 21 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 23707.8
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
If we divide 120 by 21, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 23707.85
If we take 105 away from 120, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
When dividing 150 by 21, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 23707.857
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 10:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 23707.8571
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 11:
When dividing 90 by 21, we get 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 23707.85714
Deduct 84 from 90 and we're left 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 12:
60 divided by 21 is 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 23707.857142
If we subtract 42 from 60, we get 18.
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 13:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 23707.8571428
Subtracting 168 from 180 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 14:
When dividing 120 by 21, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 23707.85714285
Subtracting 105 from 120 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

In conclusion, the division gives 23707.85714285 with a balance of 1.5e-08.