There are a lot of different calculations happening in Pixel Starships. This page can help you translate meaningless game numbers back into real world values!
Armor Damge Reduction Formula:
Damage Taken = 1/(1+(Combined Armor Stat*0.01)) * Shot Damage
(Armor only applies to system damage).-
Crew Gas Draw Price Formula:
Exponent = Max([Number of all 3/4/5 star Crew members], Floor(DNA/100))
Base Gas Draw Price = 500 * (1.5 ^ Exponent) floored to the two most significant digits
Final Gas Draw Price = Min([Base Gas Draw Price], 2 Million)