CREATE TABLE table_42006 ("Member State" TEXT, "Population in millions" FLOAT, "Population % of EU" TEXT, "Area km 2" FLOAT, "Area % of EU" TEXT, "Pop. density People/km 2" FLOAT)

What is the area km2 of the area with a pop density people/km2 larger than 91, is a member state of Italy, and had less than 58.8 population in millions?
SELECT SUM("Area km 2") FROM table_42006 WHERE "Pop. density People/km 2" > '91' AND "Member State" = 'italy' AND "Population in millions" < '58.8'
SELECT SUM("Area km 2") FROM "table_42006" WHERE "Member State" = 'italy' AND "Pop. density People/km 2" > '91' AND "Population in millions" < '58.8'