Table: football_stats_1997_3
Columns: position
team
played
wins
draws_p_k_wins_p_k_losses
losses
scored
conceded
points

Question: What is the lowest played when draws P.K. Wins / P.K. Losses is 3/0, and points is larger than 18?
SQL: SELECT MIN("played") FROM football_stats_1997_3 WHERE "draws_p_k_wins_p_k_losses" = '3/0' AND "points" > 18