7766554334;;;()$&

I put "7766554334;;;()$&" in the calculator and it came out with

$$\left(\mathrm{ERROR}\right)\,{ and }\,{\mathtt{0}} = \underset{{\tiny{\text{Error: Unknown Function 'bin_and'}}}}{\left(\mathrm{ERROR}\right)\,{ and }\,{\mathtt{0}}}$$

Lol?

9+9=18 ANSWER

9+9=18. 18 is the answer.

NinjaDevo, the question is 9+9, I think.

NinjaDevo that heading was just to make the actual (so hard) question look attractive!lol!