We look at the division of 452965 by 21 
We want to divide 452965 by 21.

Step 1:
The number 21 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 21

Let's proceed to step 2:
21 can be fit into 45 2 times, resulting in a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 42 away from 45, we end up with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 21

Moving on to step 3:
If we divide 32 by 21, we get 1 and a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 21 from 32 and we're left with 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 21

Step 4:
When dividing 119 by 21, we get 5 with a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 215.0
If we take 105 away from 119, we end up with 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 21

Moving on to step 5:
When dividing 146 by 21, we get 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 2156.0
If we take 126 away from 146, we end up with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 21

Step 6:
21 goes into 205 9 times with a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 21569.0
Subtract 189 from 205 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.

Moving on to step 7:
21 goes into 160 7 times with a remainder of 13.
The next digit of our result is 7. 
Result so far: 21569.7
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.

Step 8:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 21569.76
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.

Advancing to step 9:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 21569.761
Deduct 21 from 40 and we're left 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.

On to step 10:
21 goes into 190 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 21569.7619
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.

On to step 11:
When dividing 10 by 21, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 21569.7619
Subtract 0 from 10 to get 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 12:
21 goes into 100 4 times with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 21569.761904
Subtract 84 from 100 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.

Moving on to step 13:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 21569.7619047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 14:
130 divided by 21 is 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 21569.76190476
If we take 126 away from 130, we end up 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 21569.76190476, with a leftover of 4e-09.