View Compilation Error

0_0_21964178_18929.cpp: In member function 'Matrix Matrix::operator*(Matrix) const':
0_0_21964178_18929.cpp:50:84: error: expected ';' before ')' token
                     ans.a[i][j] = (ans.a[i][j] + (a[i][k] % MOD) * b.a[k][j]) % MOD) % MOD;
                                                                                    ^