123912 divided by 2 
We want to figure out the number of times 123912 can be divided by 2.

Moving on to step 1:
2 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 2

Moving on to step 2:
12 divided by 2 is 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 12 from 12 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 2

Moving on to step 3:
2 can be fit into 3 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 61.0
The remainder is 1 after subtracting 2 from 3.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 2

Going ahead to step 4:
19 divided by 2 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 619.0
The remainder is 1 after subtracting 18 from 19.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 2

Going ahead to step 5:
The number 2 fits into 11 5 times, leaving a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 6195.0
Deduct 10 from 11 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 2

Moving on to step 6:
2 goes into 12 6 times with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 61956.0
Subtracting 12 from 12 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.

Step 7:
2 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 61956.0
If we subtract 0 from 0, 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.

On to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 61956.0
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.

Our division results in 61956.0 with a remaining 0.0.