How much international mail has 4,650 international freight and more than 0 domestic mail?
CREATE TABLE "loaded_unloaded_freight_and_mail_tons_tu" (
  "year" real,
  "domestic_freight" real,
  "domestic_mail" real,
  "international_freight" real,
  "international_mail" real,
  "total_freight_and_mail" real,
  "change" text
);
SELECT SUM("international_mail") FROM "loaded_unloaded_freight_and_mail_tons_tu" WHERE "international_freight"='4,650' AND "domestic_mail">0;