all_calculations = ['1.0 km = 1000.0 m', '500.0 m = 50000.0 cm',
                    '2.5 km = 2500000.0 mm', '100.0 cm = 1.0 m',
                    '250.0 mm = 25.0 cm', '5.0 m = 0.005 km']

newest_first = list(reversed(all_calculations))


print("==== Oldest to Newest for File ====")
for item in all_calculations:
    print(item)

print()

print("==== Most Recent First ====")
for item in newest_first:
    print(item)