CREATE TABLE table_203_497 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

how many more gold medals has nepal won than pakistan ?
SELECT (SELECT "gold" FROM table_203_497 WHERE "nation" = 'nepal') - (SELECT "gold" FROM table_203_497 WHERE "nation" = 'pakistan')
SELECT (SELECT "gold" FROM "table_203_497" WHERE "nation" = 'nepal') - (SELECT "gold" FROM "table_203_497" WHERE "nation" = 'pakistan')