What is the total operating profit of all segments in 2018?
{"($ in millions) -- Reporting Segment": {"Fiscal 2018 Operating Profit": 2018, "Fiscal 2017 Operating Profit": 2017.0, "% Inc (Dec)": "% Inc (Dec)"}, "($ in millions) -- Grocery & Snacks": {"Fiscal 2018 Operating Profit": 724.8, "Fiscal 2017 Operating Profit": 655.4, "% Inc (Dec)": 11.0}, "($ in millions) -- Refrigerated & Frozen": {"Fiscal 2018 Operating Profit": 479.4, "Fiscal 2017 Operating Profit": 445.8, "% Inc (Dec)": 8.0}, "($ in millions) -- International": {"Fiscal 2018 Operating Profit": 86.5, "Fiscal 2017 Operating Profit": -168.9, "% Inc (Dec)": "N/A"}, "($ in millions) -- Foodservice": {"Fiscal 2018 Operating Profit": 121.8, "Fiscal 2017 Operating Profit": 105.1, "% Inc (Dec)": 16.0}, "($ in millions) -- Commercial": {"Fiscal 2018 Operating Profit": "-", "Fiscal 2017 Operating Profit": 202.6, "% Inc (Dec)": -100}}
total_profit = df["($ in millions) -- Grocery & Snacks"]["Fiscal 2018 Operating Profit"] + df["($ in millions) -- Refrigerated & Frozen"]["Fiscal 2018 Operating Profit"] + df["($ in millions) -- International"]["Fiscal 2018 Operating Profit"] + df["($ in millions) -- Foodservice"]["Fiscal 2018 Operating Profit"]
answer = total_profit