print ("Hi, I am Marvin, your personal bot. ")
#ask the user to enter their name
name =input ("what is your name? ")
#print a message including the name
print ("Hello " + name)
command=input("How can I help? ")
if command == "add" or command == "plus":
    print ("Let's add some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 + number2
    output = str(result)
    print(input1 + " + " + input2 + " = " + output)
elif command == "subtract" or command == "take away":
    print ("Let's subtract some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 - number2
    output = str(result)
    print(input1 + " - " + input2 + " = " + output)
#we need to include other commands
elif command == "multiply" or command == "times":
    print ("Let's Multiply some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 * number2
    output = str(result)
    print(input1 + " - " + input2 + " = " + output)
elif command == "divide" or command == "share":
    print ("Let's Divide some numbers")
    input1 = input("Number 1> ")
    input2 = input("Number2> ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 / number2
    output = str(result)
    print(input1 + " / " + input2 + " = " + output)
elif command == "average":
    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) + "> ")
        total = total + int (number)
    result = total/how_many
    print ("the average = " + str(result))
elif command == "Add Vat":
    print ("Lets add  VAT to an item")
    input1 = input ("How much did the item cost? >£")
    input2 = input ("What is the current rate of VAT? >" "%")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 + number1 / 100 * number2
    print ("You will pay = £  " +str (result) + " icluding VAT")
else:
    print ("Sorry I dont understand")