hometown cha cha math

In the Korean and highly popular TV series Hometown cha-cha-cha, the main character Hong Du-sik is skilled in an unrealistic number of abilities, including maths. With a maths olympiad gold medal (which is plausible for a country that won 86 of these) and a CSTAT problem resolution during a lunch. Not making much sense from a screen shot… In that respect, the series is catering to gender stereotypes as the other main character Yoon Hye-jin is struggling with similar problems (while finishing dentistry school first). There is also a young kid excelling in maths, while the two young girls in the show are struggling with their studies.