CREATE TABLE table_57075 ("Rank" FLOAT, "Nation" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

On average, what is the number of silver medals for nations ranking higher than 7, with a total of 6 medals and fewer than 2 bronze medals?
SELECT AVG("Silver") FROM table_57075 WHERE "Rank" > '7' AND "Total" = '6' AND "Bronze" < '2'
SELECT AVG("Silver") FROM "table_57075" WHERE "Bronze" < '2' AND "Rank" > '7' AND "Total" = '6'