What was the score for the tournament in Michigan where the purse was smaller than 1813335.221493934?
CREATE TABLE "tournament_results" (
  "date" text,
  "tournament" text,
  "location" text,
  "purse" real,
  "winner" text,
  "score" text,
  "1st_prize" real
);
SELECT "score" FROM "tournament_results" WHERE "location"='Michigan' AND "purse"<1813335.221493934;