What is the ratio of foreign exchange earnings to expenditure in foreign currency in FY 2019?
{"a. Foreign exchange earnings": {"FY 2019": 119499, "FY 2018": 92258}, "b. CIF Value of imports": {"FY 2019": 447, "FY 2018": 768}, "c.Expenditure in foreign currency": {"FY 2019": 49336, "FY 2018": 33014}}
foreign_exchange_earnings_2019 = df["a. Foreign exchange earnings"]["FY 2019"]
expenditure_in_foreign_currency_2019 = df["c.Expenditure in foreign currency"]["FY 2019"]
answer = foreign_exchange_earnings_2019 / expenditure_in_foreign_currency_2019