print("Hi, I'm Marvin, your personal bot.")
command = input("How can I help? ")
#user specifies what they would like bot to do.
#user asks bot to add
if command == "add" or command == "plus" or command == "+":
    print("lets " +command +" 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)
#user asks bot to subtract
elif command == "subtract" or command == "take away" or command == "takeaway" or command == "minus":
    print("lets "+command+" 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)
#user asks bot to multiply
elif command == "multiply" or command == "times":
    print("lets " +command+ " 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)
#user asks bot to divide
elif command == "divide":
    print("lets " +command+ " 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)
else:
    print(" Sorry I don't understand")