We look at the division of 646274 by 2 
We're looking to find how many times 2 goes into 646274.

On to step 1:
6 divided by 2 is 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 6 away from 6, we end up with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 2

On to step 2:
2 can be fit into 4 2 times, resulting in a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Subtract 4 from 4 to get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 2

Let's proceed to step 3:
The number 2 fits into 6 3 times, leaving a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 323.0
Subtract 6 from 6 to get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 2

On to step 4:
2 divided by 2 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 3231.0
If we take 2 away from 2, we end up with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 2

Advancing to step 5:
2 goes into 7 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 32313.0
If we take 6 away from 7, we end up with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 2

Moving on to step 6:
If we divide 14 by 2, we get 7 and a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 323137.0
If we subtract 14 from 14, 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.

Step 7:
If we divide 0 by 2, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 323137.0
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.

Let's proceed to step 8:
0 divided by 2 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 323137.0
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.

The final outcome is 323137.0, with a leftover of 0.0.