print("Hi, I am Zed, your personal bot.")
command = input("How can I help? ")
if command == "add" or command == "plus":
    print("lets add some numbers")
    input1 = input("Number 1: ")
    input2 = input("Number 2: ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 + number2
    output = str(result)
    print(input1 + " + " + input2 +  " = " + output)
elif command == "subtract" or command == "minus":
    print("lets subtract some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 - number2
    output = str(result)
    print(input1 + " - " + input2 + " = " + output)
elif command == "multiply":
    print("lets multiply some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 * number2
    output = str(result)
    print(input1 + " * " + input2 + " = " + output)
elif command == "divide":
    print("lets divide some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 / number2
    output = str(result)
    print(input1 + " / " + input2 + " = " + output)
elif command == "Area":
    print("lets calculate the area of a triangle")
    input1 = input("Base > ")
    input2 = input("Hypotenuse > ")
    number1 = int(input1)
    number2 = int(input2)
    result = (number1 * number2) / 2
    output = str(result)
    print("(Base:"+input1 + " * " + "Hypotenuse:"+input2 + ") / 2" + " = " + output)
elif command == "average" or command == "avg":
    total = 0
    how_many = input("how many numbers? ")
    how_many = int(how_many)
    for number_count in range(how_many):
        number = input("Enter number " + str(number_count) + "> ")
        total = total + int(number)
    result = total / how_many
    print("the average = " + str(result))
elif command == "shopping" or command == "shop":
    total = 0
    shopping = []
    how_many = input("how many items of shopping do you have? ")
    how_many = int(how_many)
    for item_number in range(how_many):
        item = input("what is the item " + str(item_number) + " ? ")
        number = input("Enter the cost of " + str(item) + "> ")
        total = total + int(number)
        shopping.append(item)
    print(shopping)
    print("You have " + str(how_many) + " items in your shopping list. Your total is $" + str(total))
else:
    print("sorry I dont understand")