View Compilation Error

0_0_29851640_12600.cpp: In function 'int Sigma2(int)':
0_0_29851640_12600.cpp:46:9: error: expected primary-expression before 'return'
  return return (x*(x+1))%(6ll*P)*(x<<1+1)/6%P;
         ^
0_0_29851640_12600.cpp:46:9: error: expected ';' before 'return'