"""
Die Einheit Zoll
31.03.2022
(c) Jürgen Meier
www.3d-meier.de
"""

import decimal

print(1/0.3937)


decimal.getcontext().prec = 100
a = decimal.Decimal(3937) 
b=a/10000
print(1/b)


c = decimal.Decimal(254) 
d=c/100
z = 0
for i in range(0,18):
    z=z + (2**i)*d/(1000000**i)
print(z)


e = decimal.Decimal(500000) 
f = decimal.Decimal(499999)
g=e*c/f
print(g)