CREATE TABLE table_7435 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" FLOAT)

How many people attended the game on December 20, 1964?
SELECT "Attendance" FROM table_7435 WHERE "Date" = 'december 20, 1964'
SELECT "Attendance" FROM "table_7435" WHERE "Date" = 'december 20, 1964'