We're dividing 451140 by 2 
We're looking to find how many times 2 goes into 451140.

Step 1:
If we divide 4 by 2, we get 2 and a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 4 from 4 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 2

Going ahead to step 2:
The number 2 fits into 5 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtract 4 from 5 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 2

Step 3:
The number 2 fits into 11 5 times, leaving a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 225.0
Subtract 10 from 11 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 2

Step 4:
2 goes into 11 5 times with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 2255.0
Deduct 10 from 11 and we're left with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 2

Going ahead to step 5:
14 divided by 2 is 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 22557.0
Subtract 14 from 14 to get 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 2

Step 6:
0 divided by 2 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 225570.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
2 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 225570.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 225570.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 225570.0 and a remainder of 0.0.