1440 yuan. According to the relevant information on Weibo, it was found that Weibo borrowed 500 yuan and repaid 1,440 yuan. Weibo borrows 500 yuan and the interest is 1,440 yuan. The daily interest rate is as low as 0.04, which translates into an annual interest rate of 14.4. This means that if you borrow 10,000 yuan from Weibo, and borrow money from Weibo: the maximum annual interest rate is far more than 36.