We're dividing 257946 by 2 
Let's see how many times 2 fits into 257946.

Step 1:
When dividing 2 by 2, we get 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 2 from 2 and we're left with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 2

On to step 2:
5 divided by 2 is 2 with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 4 from 5, we get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 2

Going ahead to step 3:
2 goes into 17 8 times with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 128.0
If we take 16 away from 17, we end up with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 2

Step 4:
If we divide 19 by 2, we get 9 and a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 1289.0
If we subtract 18 from 19, we get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 2

Advancing to step 5:
2 can be fit into 14 7 times, resulting in a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 12897.0
Subtract 14 from 14 to get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 2

Let's proceed to step 6:
2 can be fit into 6 3 times, resulting in a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 128973.0
If we take 6 away from 6, 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.

Step 7:
0 divided by 2 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 128973.0
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:
If we divide 0 by 2, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 128973.0
Subtract 0 from 0 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.

The final outcome is 128973.0, with a leftover of 0.0.