CREATE TABLE table_16072430_1 (viewers VARCHAR, share VARCHAR, weekly_rank VARCHAR)

What is the total number of viewers where the share is 7 and the week rank is 64?
SELECT COUNT(viewers) FROM table_16072430_1 WHERE share = 7 AND weekly_rank = "64"
SELECT COUNT("viewers") FROM "table_16072430_1" WHERE "64" = "weekly_rank" AND "share" = 7