What is the increase/ (decrease) in Gross profit of Probe Cards from fiscal 2019 to 2018?
{"Gross profit": {"Probe Cards": 211382, "Systems": 50927, "Corporate and Other": -24813, "Total": 237496}, "Gross margin": {"Probe Cards": 43.0, "Systems": 51.9, "Corporate and Other": "\u2014 %", "Total": 40.3}, "Fiscal 2018 -- ": {"Probe Cards": "Probe Cards", "Systems": "Systems", "Corporate and Other": "Corporate and Other", "Total": "Total"}, "Fiscal 2018 -- Gross profit": {"Probe Cards": 187320, "Systems": 47074, "Corporate and Other": -24055, "Total": 210339}, "Fiscal 2018 -- Gross margin": {"Probe Cards": 43.1, "Systems": 49.3, "Corporate and Other": "\u2014 %", "Total": 39.7}, "Fiscal 2017 -- ": {"Probe Cards": "Probe Cards", "Systems": "Systems", "Corporate and Other": "Corporate and Other", "Total": "Total"}, "Fiscal 2017 -- Gross profit": {"Probe Cards": 195903, "Systems": 46647, "Corporate and Other": -26953, "Total": 215597}, "Fiscal 2017 -- Gross margin": {"Probe Cards": 43.1, "Systems": 49.8, "Corporate and Other": "\u2014 %", "Total": 39.3}}
gross_profit_probe_cards = df["Gross profit"]["Probe Cards"]
fiscal_2018_gross_profit_probe_cards = df["Fiscal 2018 -- Gross profit"]["Probe Cards"]
answer = gross_profit_probe_cards - fiscal_2018_gross_profit_probe_cards