278666 divided by 2 
Our goal is to divide 278666 by 2.

Going ahead to step 1:
2 divided by 2 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 2 from 2 leaves us with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 2

Let's proceed to step 2:
7 divided by 2 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtract 6 from 7 to get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 2

On to step 3:
If we divide 18 by 2, we get 9 and a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 139.0
The remainder is 0 after subtracting 18 from 18.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 2

Going ahead to step 4:
When dividing 6 by 2, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 1393.0
If we subtract 6 from 6, we get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 2

Step 5:
2 goes into 6 3 times with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 13933.0
Deduct 6 from 6 and we're left with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 2

Advancing to step 6:
The number 2 fits into 6 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 139333.0
Subtract 6 from 6 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.

Let's proceed to step 7:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 139333.0
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.

Going ahead to step 8:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 139333.0
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 139333.0, with a leftover of 0.0.