CREATE TABLE table_20743 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Ground" TEXT, "Crowd" FLOAT, "Date" TEXT, "Time" TEXT)

When the home team scored 7.8 (50), how many away team scores were recorded?
SELECT COUNT("Away team score") FROM table_20743 WHERE "Home team score" = '7.8 (50)'
SELECT COUNT("Away team score") FROM "table_20743" WHERE "Home team score" = '7.8 (50)'