user: Question: What was the total number of weeks on peak for the Ireland Albums Top 75 chart?
Columns: ['Chart', 'Date of Entry', 'Entry Position', 'Peak Position', 'Weeks on Peak', 'Weeks on Chart', 'Date of Exit']
Types: ['text', 'text', 'real', 'real', 'real', 'real', 'text']
Sample row: ['UK Albums Top 75', '6 March 2005', 75.0, 6.0, 1.0, 32.0, '9 September 2005']
SQL:

assistant: SELECT SUM("Weeks on Peak") FROM "Table" WHERE "Chart" = 'Ireland Albums Top 75';