Question: What is the sum of Week, when Date is December 2, 2001?
SQL: SELECT SUM("Week") FROM "2-16778063-2" WHERE "Date" = 'December 2, 2001';

Question: What is the total number of Week, when Opponent is at cleveland browns?
SQL: SELECT COUNT("Week") FROM "2-16778063-2" WHERE "Opponent" = 'at cleveland browns';