bot with mean

print("Hi, I am Marvin, your personal bot.")
command = input("How can I help? ")
if command == "add" or command == "plus" or command == "+":
    print("Let's add some numbers")
    input1 = input("Number 1> ")    # These numbers are input as strings
    input2 = input("Number 2> ")    # Python can't add strings
    number1 = int(input1)   # convert input number to an integer
    number2 = int(input2)   # Python *can* do arthmetic with integers
    result = number1 + number2
    output = str(result)    # Integer has to be converted back to string
    print(input1 + " + " + input2 + " = " + output)
elif command == "subtract" or command == "minus" or command == "-":
    print("Let's 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" or command == "times" or command == "*":
    print("Let's 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" or command == "share" or command == "/":
    print("Let's 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 == "average" or command == "mean":
    how_many = input("How many numbers? ")
    how_many = int(how_many)
    total = 0
    for number_count in range(how_many):
        number = input("Enter number " + str(number_count + 1) + "> ")
        total = total + int(number)
    result = total / how_many
    print("the average =",result)

else:
    print("I'm sorry, I've not been programmed to " + command)
print("Done")