CREATE TABLE table_203_548 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

how many more bronze medals were awarded than silver ?
SELECT (SELECT SUM("bronze") FROM table_203_548) - (SELECT SUM("silver") FROM table_203_548)
SELECT (SELECT SUM("bronze") FROM "table_203_548") - (SELECT SUM("silver") FROM "table_203_548")