View Compilation Error

0_0_33588455_20839.cpp: In function 'int main()':
0_0_33588455_20839.cpp:26:93: error: expected ';' before ')' token
             cout << "Case #"<< i << ": " << (2 * quick_pow(4,t - 1,3 * mod) + 4) % (3 * mod)) / 3 << endl;
                                                                                             ^