user: Question: For End of Fiscal Years past 1980 that also have as % of GDP Low-High of 83.4-84.4, and a Debt Held By Public ($Billions) smaller than 7552 what would be the average Gross Debt in $Billions undeflated Treas. in said years?
Columns: ['End of Fiscal Year', 'Gross Debt in $Billions undeflated Treas.', 'as % of GDP Low-High', 'Debt Held By Public ($Billions)', 'as % of GDP (Treas/MW, OMB or OMB/MW)', 'GDP $Billions OMB/BEA est.=MW.com']
Types: ['real', 'real', 'text', 'real', 'real', 'text']
Sample row: [1910.0, 2.653, '8.0', 2.653, 8.0, 'est. 32.8']
SQL:

assistant: SELECT AVG("Gross Debt in $Billions undeflated Treas.") FROM "Table" WHERE "End of Fiscal Year" > 1980.0 AND "as % of GDP Low-High" = '83.4-84.4' AND "Debt Held By Public ($Billions)" < 7552.0;