CREATE TABLE table_48250 ("Country" TEXT, "Preliminary" FLOAT, "Interview" FLOAT, "Swimsuit" FLOAT, "Evening Gown" FLOAT, "Average" FLOAT)

What is the number for the interview in Illinois when the preliminary is less than 8.558?
SELECT SUM("Interview") FROM table_48250 WHERE "Country" = 'illinois' AND "Preliminary" < '8.558'
SELECT SUM("Interview") FROM "table_48250" WHERE "Country" = 'illinois' AND "Preliminary" < '8.558'