How many hours must Sisyphus have in a month, and how much will it cost when it is full?

167 hours, 23.4 yuan per hour. According to Xiaohongshu's inquiry, employees of Sisyphus Bookstore need to work 167 hours per month, and the time is calculated at 23.4 yuan per hour. Sisyphus Bookstore is a chain private bookstore, which was established in 1994. By September 5, 2023, there were more than 300 entity chain bookstores in more than 70 cities across the country, with more than 5 million active members.