How much will receive investor(early bird) per 1 btc?
You will get (0.2 / (all_btc_early + equivalent valued of all_ltc_early)) * 15% * 100,000,000 EXO
as early bird.
153 BTC + (663 LTC(663*~0.02526 BTC=
16,74738 BTC)) = 169,74738 BTC
(1 / 169,74738) * 15% * 100,000,000 EXO =
88757 EXO
you will get 88'757 EXO for 1 BTC (132'549 for 1.5 BTC) as early bird investor.