How does the given function improve the code versus if no fu…

How does the given function improve the code versus if no function was present?def fahrenheit_to_celsius(fahrenheit): return (fahrenheit – 32.0) * 5.0 / 9.0fahrenheit = float(input())c1 = fahrenheit_to_celsius(fahrenheit);c2 = fahrenheit_to_celsius(32.0);c3 = fahrenheit_to_celsius(72.0);