What is the interest coverage ratio in 2019?
{"Net income/(loss) attributable to Nielsen shareholders": {"2019": -415, "2018": -712, "2017": 429}, "Interest expense, net": {"2019": 391, "2018": 386, "2017": 370}, "(Benefit)/provision for income taxes": {"2019": -260, "2018": -182, "2017": 388}, "Depreciation and amortization": {"2019": 756, "2018": 675, "2017": 640}, "EBITDA": {"2019": 472, "2018": 167, "2017": 1827}, "Other non-operating (income)/expense, net(b)": {"2019": 191, "2018": 33, "2017": 27}, "Restructuring charges": {"2019": 80, "2018": 139, "2017": 80}, "Impairment of goodwill and other long-lived assets": {"2019": 1004, "2018": 1413, "2017": "-"}, "Share-based compensation expense": {"2019": 50, "2018": 35, "2017": 45}, "Other items(a)": {"2019": 56, "2018": 63, "2017": 45}, "Adjusted EBITDA": {"2019": 1853, "2018": 1850, "2017": 2024}}
ebitda_2019 = df["EBITDA"]["2019"]
interest_expense_net_2019 = df["Interest expense, net"]["2019"]
answer = ebitda_2019 / interest_expense_net_2019