The interest rate is calculated at 2.3%, and the interest for each period is 920 yuan. The interest in plastic surgery staging is directly related to the platform, total amount, times and methods of staging. The calculation formula of plastic surgery installment interest is: installment interest = installment total amount * installment interest rate. If the total amount is 5,000 yuan and the interest rate is 2.3%, the installment interest is 5,000 * 2.3% =115 yuan. The interest for cosmetic surgery for 4 weeks is calculated at the rate of 2.3%, and the interest for each period is 920 yuan. However, there are huge risks in most cosmetic staging in the market, and the staging interest is high. There will be a huge trap in the signed contract, so don't apply for cosmetic staging easily.