Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: 1 / 2 + [ ( 2 / 3 * 3 / 8 ) + 4 ] - 8 / 16 =
17 / 4
-1/2.