CREATE TABLE table_27098 ("#" FLOAT, "Title" TEXT, "Director" TEXT, "Writer ( s ) " TEXT, "Viewers" TEXT, "Air date" TEXT, "Production code" FLOAT)

When 7.55 is the amount of viewers what is the lowest number?
SELECT MIN("#") FROM table_27098 WHERE "Viewers" = '7.55'
SELECT MIN("#") FROM "table_27098" WHERE "Viewers" = '7.55'