The name is in the corner of Yongjin and daughters by Baek Jin-mi's phone, but when Young-gyu enters the nomination, the name is thrilled and there are only young-gyu. However, Young-kyu is more than a degree. One free call comes to five people. A self-proclaimed math genius raises medicine and issues a high-quality math problem. Oh-jung misses elementary arithmetic problems and waits for the phone call again. (Source: SBS)