Table: ranczo_episodes
Columns: episode
1st_season
2nd_season
3rd_season
4th_season
5th_season
6th_season
7th_season

Question: How many 7th season episodes had 2nd season viewerships of 6 594 469?
SQL: SELECT COUNT("7th_season") FROM ranczo_episodes WHERE "2nd_season" = '6 594 469'