<s>[INST] import math

def calculate_total_area_of_circles(radius):
    total_area = math.pi * radius ** 2
    return total_area

radius = float(input("Enter the radius of the circle: "))
print("The area of the circle is", calculate_total_area_of_circles(radius))

This program calculates the area of a single circle. I need to extend it to calculate the area of multiple circles. 

How can I extend this program to ask the user for the number of circles they want to calculate the area for, then ask for the radius of each circle, and finally print the total area of all the circles?[/INST]