What is the total amount of acquisition and other costs paid in 2018 and 2019?
{"Cash flows from operating activities": {"2019": 7958, "2018": 7384}, "Capital expenditures": {"2019": -3988, "2018": -3971}, "Cash dividends paid on preferred shares": {"2019": -147, "2018": -149}, "Cash dividends paid by subsidiaries to NCI": {"2019": -65, "2018": -16}, "Acquisition and other costs paid": {"2019": 60, "2018": 79}, "Voluntary DB pension plan contribution": {"2019": "\u2013", "2018": 240}, "Free cash flow": {"2019": 3818, "2018": 3567}}
acq_2019 = df["Acquisition and other costs paid"]["2019"]
acq_2018 = df["Acquisition and other costs paid"]["2018"]
answer = acq_2019 + acq_2018