454891 ÷ 2 
Let's see how many times 2 fits into 454891.

Let's proceed to step 1:
When dividing 4 by 2, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 4 from 4, we get 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 2

On to step 2:
2 can be fit into 5 2 times, resulting in a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtract 4 from 5 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 2

Moving on to step 3:
The number 2 fits into 14 7 times, leaving a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 227.0
Subtracting 14 from 14 leaves us with 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 2

Advancing to step 4:
If we divide 8 by 2, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 2274.0
Subtracting 8 from 8 leaves us with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 2

Let's proceed to step 5:
2 can be fit into 9 4 times, resulting in a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 22744.0
Deduct 8 from 9 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 2

Advancing to step 6:
If we divide 11 by 2, we get 5 and a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 227445.0
If we take 10 away from 11, we end up 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 7:
2 goes into 10 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 227445.5
Subtract 10 from 10 to 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.

Step 8:
2 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 227445.5
Deduct 0 from 0 and we're left 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.

On to step 9:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 227445.5
Deduct 0 from 0 and we're left 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.

Our division results in 227445.5 with a remaining 0.0.