def calcz(v):
    a = 0.000006
    b = 0.00102
    z = a - (v * b)
    return z

def genanswer(z, v):
    j = z / v
    return j * 1000

l = [0.000054, 0.000057, 0.000063, 0.000066, 0.000074]

for j in l:
    genanswer(calcz(j), j)