https://blog.jejudoin.co.kr/12%ec%9b%94-%ec%a0%9c%ec%a3%bc%eb%8f%84-%ea%b0%80%eb%b3%bc%eb%a7%8c%ed%95%9c-%ec%9d%b8%ea%b8%b0-%ea%b4%80%ea%b4%91%ec%a7%80-30%ec%84%a0-%ed%9b%84%eb%b6%88%ed%95%a0%ec%9d%b8%ec%9e%85%ec%9e%a5%ea%b6%8c/ 2019-12-22T08:12:07+00:00 always 0.6