Name the total number of series for march 19, 2000
CREATE TABLE "table1_1876825_2" (
  "no_in_series" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);
SELECT COUNT("no_in_series") FROM "table1_1876825_2" WHERE "original_air_date"='March 19, 2000';