kilometers = 5.5
#To take kilometers from the user , uncomment the code below
kilometers = input(''Enter values in kilometers'')
# conversion factor
conv_fac = 0.621371
#calculate miles
miles = kilometers * conv_fac
print('%0.3f kilometers is equal to %0.3f miles ' %(kilometers , miles ))
Output
5.500 kilometers is equal to 3.418 miles