Evaluate 3 to the power of 3 + 6 (2 + 3/6)

If 3 + 6(2 + 3/6) is actually the power, then simplify 3 + 6(2 + 3/6) as a first step.  Must follow Order of Operations rules (PEMDAS):  mult and div BEFORE addition and subtraction. 

Thus, 3 + 6(2 + 3/6)  = 3 + 6 (15/6)
                                   = 3 + 15  =  18.

Then:  3^18 is the answer.  You could expand this if you wanted, but what would be the point of that?