We're dividing 450021 by 585 
Our goal is to divide 450021 by 585.

Going ahead to step 1:
4 divided by 585 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 585

On to step 2:
When dividing 45 by 585, we get 0 with a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 45 after subtracting 0 from 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 585

Going ahead to step 3:
If we divide 450 by 585, we get 0 and a remainder of 450.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 450 after subtracting 0 from 450.
Fetch the next digit (0) from the dividend, attach it to 450 and continue: 4500 / 585

On to step 4:
585 goes into 4500 7 times with a remainder of 405.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 4095 from 4500 leaves us with 405.
Fetch the next digit (2) from the dividend, attach it to 405 and continue: 4052 / 585

Moving on to step 5:
585 goes into 4052 6 times with a remainder of 542.
The number 6 becomes the next digit in our result. 
Result so far: 76.0
If we take 3510 away from 4052, we end up with 542.
Append the next digit (1) from the dividend to 542 and continue with: 5421 / 585

Let's proceed to step 6:
585 can be fit into 5421 9 times, resulting in a remainder of 156.
Put 9 as the next digit of the answer. 
Result so far: 769.0
If we take 5265 away from 5421, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Step 7:
When dividing 1560 by 585, we get 2 with a remainder of 390.
Write down 2 as next digit of the result. 
Result so far: 769.2
The remainder is 390 after subtracting 1170 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Going ahead to step 8:
3900 divided by 585 is 6 with a remainder of 390.
The next digit of our result is 6. 
Result so far: 769.26
If we take 3510 away from 3900, we end up with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Advancing to step 9:
The number 585 fits into 3900 6 times, leaving a remainder of 390.
Record the quotient 6 as the next digit in the result. 
Result so far: 769.266
Subtract 3510 from 3900 to get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Our division results in 769.266 with a remaining 0.039.