Table: chargers_1999
Columns: week
date
opponent
result
attendance

Question: What the total of Week with attendance of 53,147
SQL: SELECT SUM("week") FROM chargers_1999 WHERE "attendance" = '53,147'

Question: What is the lowest week for December 26, 1999
SQL: SELECT MIN("week") FROM chargers_1999 WHERE "date" = 'december 26, 1999'