What is the largest Grid that has a Bike of honda cbr1000rr, and a Time of +20.848, and a Lap greater than 24?
CREATE TABLE "superbike_race_2_classification" (
  "rider" text,
  "bike" text,
  "laps" real,
  "time" text,
  "grid" real
);
SELECT MAX("grid") FROM "superbike_race_2_classification" WHERE "bike"='honda cbr1000rr' AND "time"='+20.848' AND "laps">24;