We're dividing 450427 by 45 
We're looking to find how many times 45 goes into 450427.

On to step 1:
45 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 45

Moving on to step 2:
45 goes into 45 1 times with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 45 from 45 leaves us with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 45

Moving on to step 3:
The number 45 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 0 leaves us with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 45

Going ahead to step 4:
If we divide 4 by 45, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 45

Step 5:
42 divided by 45 is 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 1000.0
If we take 0 away from 42, we end up with 42.
Take the next digit (7) from the dividend and append it to 42, then repeat: 427 / 45

On to step 6:
When dividing 427 by 45, we get 9 with a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 10009.0
If we subtract 405 from 427, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 7:
45 goes into 220 4 times with a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 10009.4
If we subtract 180 from 220, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 8:
When dividing 400 by 45, we get 8 with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 10009.48
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
400 divided by 45 is 8 with a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 10009.488
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 10009.488 with a remainder of 0.004.