In April 2021 (almost a year ago) the ING Bank in Turkey was offering 19% interest for one year lira deposits. (Akbank was offering 16.5%). Suppose in April 2021 you put TRY1000 in the bank for one year at 19% interest, and you get back TRY1190 in April 2022.
The real interest rate using the appoximation formula is ___%.