What is the sum of the Billboard 200 Peak scores given to the song with the Title Bread?
CREATE TABLE "studio_albums" (
  "year" real,
  "title" text,
  "label" text,
  "riaa_sales_certification" text,
  "billboard_200_peak" real
);
SELECT SUM("billboard_200_peak") FROM "studio_albums" WHERE "title"='bread';