recieved hra for part of year.How to claim 80gg exemption for next part of year

Dr.Sagar Khanna (17 Points)

24 July 2018  
i recieved hra for 3 months in a financial year.Then i switched jobs and my new employer is not giving hra.How can i get 80gg deduction for remaining 9 months.I am not able to calculate.I am living on rent throughout the FY.Please help.