CREATE TABLE table_2857 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT)

Name the most number in series for production code of 3abc11
SELECT MAX("No. in series") FROM table_2857 WHERE "Production code" = '3ABC11'
SELECT MAX("No. in series") FROM "table_2857" WHERE "Production code" = '3ABC11'