CREATE TABLE table_26124171_1 (team VARCHAR2, series VARCHAR2)

How many teams were in the series championnat de france formula renault 2.0?
SELECT team FROM table_26124171_1 WHERE series = "Championnat de France Formula Renault 2.0"
SELECT "team" FROM "table_26124171_1" WHERE "Championnat de France Formula Renault 2.0" = "series"