CREATE TABLE table_31767 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" CLOB)

Tell me the sum of week for result of l 24 21
SELECT SUM("Week") FROM table_31767 WHERE "Result" = 'l 24–21'
SELECT SUM("Week") FROM "table_31767" WHERE "Result" = 'l 24–21'