We're dividing 126249 by 2 
Let's see how many times 2 fits into 126249.

Advancing to step 1:
If we divide 1 by 2, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 2

Going ahead to step 2:
2 can be fit into 12 6 times, resulting in a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 12 away from 12, we end up with 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.
Use 3 as the next digit of our solution. 
Result so far: 63.0
Deduct 6 from 6 and we're left with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 2

Going ahead to step 4:
When dividing 2 by 2, we get 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 631.0
If we take 2 away from 2, we end up with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 2

Going ahead to step 5:
2 goes into 4 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 6312.0
If we subtract 4 from 4, we get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 2

Advancing to step 6:
If we divide 9 by 2, we get 4 and a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 63124.0
If we subtract 8 from 9, we get 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:
If we divide 10 by 2, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 63124.5
The remainder is 0 after subtracting 10 from 10.
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 8:
If we divide 0 by 2, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 63124.5
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.

Going ahead to step 9:
0 divided by 2 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 63124.5
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.

In conclusion, the division gives 63124.5 with a balance of 0.0.