from decimal import *
getcontext().prec = 51
num_str = str(Decimal('3') / Decimal('2'))
length = len(num_str)
if length == 1:
    print(num_str + "." + "0" * 50)
elif length < 52:
    print(num_str + "0" * (52 - length))
else:
    print(num_str[:52])