453451 ÷ 2 
We want to figure out the number of times 453451 can be divided by 2.

Advancing 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.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 2

Step 2:
When dividing 5 by 2, we get 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we take 4 away from 5, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 2

Advancing to step 3:
The number 2 fits into 13 6 times, leaving a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 226.0
Subtracting 12 from 13 leaves us with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 2

Going ahead to step 4:
If we divide 14 by 2, we get 7 and a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 2267.0
Deduct 14 from 14 and we're left with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 2

Going ahead to step 5:
When dividing 5 by 2, we get 2 with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 22672.0
If we take 4 away from 5, we end up with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 2

Advancing to step 6:
If we divide 11 by 2, we get 5 and a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 226725.0
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.

Moving on to step 7:
2 can be fit into 10 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 226725.5
Deduct 10 from 10 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.

Advancing to step 8:
When dividing 0 by 2, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 226725.5
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.

On to step 9:
If we divide 0 by 2, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 226725.5
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.

After the division, we end up with 226725.5 and a remainder of 0.0.