Hellow guys, Welcome to my website, and you are watching [기초 주산 21] 11 빼기 4의 계산?주판으로 간단하게 !. and this vIdeo is uploaded by 채널암산(권쌤) at 2020-08-28T17:30:03-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
