I only worked for ten months the year before last. How to calculate the social security base?

Total salary divided by 10 month. The Social Insurance Law stipulates that employees who worked for less than one year in the previous year are calculated by dividing the total wages by the actual number of working months, so the social security base of only working for ten months in the previous year = the total wages of ten months divided by 10 (that is, the number of working months). Article 90 of the Social Insurance Law: If the social insurance premium collection agency arbitrarily changes the base and rate of social insurance premium payment, resulting in underpayment or overpayment of social insurance premium, the relevant administrative department shall order it to recover the social insurance premium that should be paid or refund the social insurance premium that should not be paid; The directly responsible person in charge and other directly responsible personnel shall be punished according to law.