You aknowledge that you aren't able to do very basic math and therefore you aren't qualified to comment in regard to the house edge!
Its literally impossible to know for sure how many hands were won and lost. There could have been 49 wins with 0 Blackjacks, there could have been 44 wins with 4 Blackjacks, there could have been 39 wins with 10 pushes and 4 Blackjacks, there could have been 42 wins with 4 Blackjacks, 2 winning splits & 2 losing splits, etc...
You cannot determine a house edge from wins and losses when it comes to Blackjack.