"""
length in unit = length in meters/unit
length in km = length in meters/1000
"""
inch = 2.54/100
foot = 12*inch
yard = 3*foot
mile = 1760*yard

length_in_meters = 640
length_in_inches = length_in_meters/inch
length_in_feet = length_in_meters/foot
length_in_yards = length_in_meters/yard
length_in_miles = length_in_meters/mile

#print(length_in_inches,length_in_feet,length_in_yards, length_in_miles)

answer = """%g meters is %g inches, %g feet,
%g yards and %g miles.""" %(length_in_meters,length_in_inches, length_in_feet, length_in_yards,length_in_miles)

print(answer)

"""
Terminal>python length_conversion.py
640 meters is 25196.9 inches, 2099.74 feet,
699.913 yards and 0.397678 miles.
"""