input: Write a function to convert degrees Fahrenheit to degrees Celsius. The function should take a single argument, temp_fahrenheit, which represents the temperature in Fahrenheit, and return the equivalent temperature in Celsius.
  def FahrenheitToCelsius(temp_fahrenheit):
      temp_celsius = (temp_fahrenheit - 32) * 5/9
      return temp_celsius 
      
  assert FahrenheitToCelsius(32) == 0
  assert FahrenheitToCelsius(212) == 100
  assert FahrenheitToCelsius(-40) == -40
output: def FahrenheitToCelsius(temp_fahrenheit):
      temp_celsius = (temp_fahrenheit - 32) * 5/9
      return temp_celsius