How much will ₹50,000 a year investment in PPF grow in 18 years?

Public Provident Fund (PPF) currently offers 7.1% annual interest. Investing ₹50,000 every year for 18 years would mean a total contribution of ₹9 lakh. At the current rate, the investment could grow to around ₹18.38 lakh at maturity, according to Livemint. This means the investment would earn approximately ₹9.38 lakh in interest over the 18-year period.