CREATE TABLE table_40113 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

What was the score of the game against the San Diego Chargers?
SELECT SUM("Week") FROM table_40113 WHERE "Opponent" = 'san diego chargers'
SELECT SUM("Week") FROM "table_40113" WHERE "Opponent" = 'san diego chargers'