2.7 in Blackjack and 2.9 in Spanish 21.

For 8D, H17 Spanish 21 the frequency of drawing hands is 73% for two cards, 21.9% for three cards, 4.3% for four cards, 0.7% for five cards and 0.1% for six or more cards. Note that these figures do not include two card hands that you stand with. If they were included the two card percentage would be higher and the rest lower.