CREATE TABLE table_7578 ("Rank" TEXT, "Nation" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

What is the fewest number of silvers have 0 golds?
SELECT MIN("Silver") FROM table_7578 WHERE "Gold" < '0'
SELECT MIN("Silver") FROM "table_7578" WHERE "Gold" < '0'