The answer to this is 47/8. You can simplify that to 5 7/8.

Here is how to get to this answer.

First, you can convert 11 3/4 to a simple fraction. You do this by multiplying 11 by 4 and adding the three. So 11 3/4 is 47/4.

Now you can divide this by two. One way to do this is to mulitply it by 1/2. When you multiply fractions like that, you multiply top numbers by top numbers, bottom numbers by bottom numbers.

47*1 = 47

4*2 = 8

So 47/4 * 1/2 = 47/8