60% of Korean words are derived from Chinese loan words. Learning to read and write Chinese characters is not necessary for most Korean students given that they are used infrequently in modern Korean texts but learning the sound and meaning of the characters will help you improve your vocabulary similar to how students of English can benefit from learning Latin and Greek roots.

여덟 팔, eight; all around, all sides (2)
eight
八方美人 팔방미인 jack of all trades
八邊形 팔변형 octagon
八十 팔십 80
八月 팔월 August