Let's divide 457921 by 2
We want to divide 457921 by 2.

On to step 1:
When dividing 4 by 2, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
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

Let's proceed to step 2:
If we divide 5 by 2, we get 2 and a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtracting 4 from 5 leaves us with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 2

On to step 3:
When dividing 17 by 2, we get 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 228.0
Subtracting 16 from 17 leaves us with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 2

Advancing to step 4:
The number 2 fits into 19 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 2289.0
Subtract 18 from 19 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 2

Moving on to step 5:
If we divide 12 by 2, we get 6 and a remainder of 0.
The next digit of our result is 6. 
Result so far: 22896.0
Deduct 12 from 12 and we're left with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 2

Moving on to step 6:
2 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 228960.0
Deduct 0 from 1 and we're left 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.

Step 7:
When dividing 10 by 2, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 228960.5
If we subtract 10 from 10, 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.

Advancing 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: 228960.5
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.

Going ahead to step 9:
If we divide 0 by 2, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 228960.5
Subtracting 0 from 0 leaves us 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.

The final outcome is 228960.5, with a leftover of 0.0.