-14.4/0.18 - 0.85 / (0.63 - 0.8)

First, simplify the fractions:
-14.4/0.18 = -80
0.85 / 0.17 = -5

Now substitute back into the original equation:
-80 - (-5) = -80 + 5 = -75

Therefore, -14.4/0.18 - 0.85 / (0.63 - 0.8) is equal to -75.