Name the most points for class of 125cc and team of mv agusta with year more than 1957
CREATE TABLE "motorcycle_grand_prix_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "wins" real
);
SELECT MAX("points") FROM "motorcycle_grand_prix_results" WHERE "class"='125cc' AND "team"='mv agusta' AND "year">1957;