CREATE TABLE table_33642 ("Season" FLOAT, "Series Name" TEXT, "Champion" TEXT, "Races \\u2020" TEXT, "Pole Positions" TEXT, "Wins" TEXT, "Podiums" TEXT, "Fastest Laps" TEXT, "Points" TEXT, "Margin  ( pts ) " TEXT)

What is the number of podiums for the races of 13/15?
SELECT "Podiums" FROM table_33642 WHERE "Races \u2020" = '13/15'
SELECT "Podiums" FROM "table_33642" WHERE "Races \u2020" = '13/15'