Table: south_america_economy_2
Columns: country
currency
1_euro
1_usd
central_bank

Question: For Central Bank of Uruguay, what's the 1USD=?
SQL: SELECT "1_usd" FROM south_america_economy_2 WHERE "central_bank" = 'central bank of uruguay'

Question: What is the 1USD= that has the Uruguayan Peso (uyu) and 1 Euro is greater than 25.3797?
SQL: SELECT SUM("1_usd") FROM south_america_economy_2 WHERE "currency" = 'uruguayan peso (uyu)' AND "1_euro" > 25.3797

Question: What is the 1USD= in Chile and has 1 Euro greater than 635.134?
SQL: SELECT COUNT("1_usd") FROM south_america_economy_2 WHERE "country" = 'chile' AND "1_euro" > 635.134