We're dividing 450271 by 90 
We want to divide 450271 by 90.

Advancing to step 1:
If we divide 4 by 90, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 90

Going ahead to step 2:
When dividing 45 by 90, we get 0 with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Include the next digit (0) from the dividend after 45, then repeat: 450 / 90

Let's proceed to step 3:
When dividing 450 by 90, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 450 from 450, we get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 90

Moving on to step 4:
When dividing 2 by 90, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 50.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 90

Moving on to step 5:
When dividing 27 by 90, we get 0 with a remainder of 27.
Use 0 as the next digit of our solution. 
Result so far: 500.0
If we subtract 0 from 27, we get 27.
Fetch the next digit (1) from the dividend, attach it to 27 and continue: 271 / 90

Advancing to step 6:
When dividing 271 by 90, we get 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 5003.0
If we subtract 270 from 271, we get 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 7:
If we divide 10 by 90, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 5003.0
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.

Advancing to step 8:
When dividing 100 by 90, we get 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 5003.01
Subtracting 90 from 100 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 9:
90 can be fit into 100 1 times, resulting in a remainder of 10.
The next digit of our result is 1. 
Result so far: 5003.011
Subtract 90 from 100 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.

The final outcome is 5003.011, with a leftover of 0.001.