input: Write a python function to calculate the average temperature from a list of temperatures.
  assert calc_avg_temperature([64.7, 67.3, 71.3, 73.1, 75.7, 73.2, 75.7]) == 71.17142857142857
  assert calc_avg_temperature([50.0, 60.0, 70.0, 80.0, 90.0]) == 70.0
  assert calc_avg_temperature([32.0, 45.0, 50.0, 60.0, 72.0]) == 51.8
output: def calc_avg_temperature(temperatures):
      return sum(temperatures) / len(temperatures)