print ("Hi, I am Martin your personal Bot.")
command = input("What would you like to do - add, subtract, multiply, divide or the average? ")

if command == "plus" or command == "add":
    print("Let's add some numbers")
    input1 = input("Input number 1 ")
    input2 = input("Input number 2 ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 + number2
    output = str(result)
    print(input1 + "+" + input2 + "=" + output)
elif command == "subtract":
    print("Let's subtract some numbers")
    input1 = input("Input number 1 ")
    input2 = input("Input number 2 ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 - number2
    output = str(result)
    print(input1 + "-" + input2 + "=" + output)
elif command == "multiply":
    print("Let's multiply some numbers")
    input1 = input("Input number 1 ")
    input2 = input("Input number 2 ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1 * number2
    output = str(result)
    print(input1 + "x" + input2 + "=" + output)

elif command == "divide":
    print("Let's divide some numbers")
    input1 = input("Input number 1 ")
    input2 = input("Input number 2 ")
    number1 = int(input1)
    number2 = int(input2)
    result = number1/number2
    output = str(result)
    print(input1 + "÷" + input2 + "=" + output)

elif command == "average" or command == "the 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)
    output = total/how_many
    print("The average = " + str(output))

else:
    print("sorry I don't understand")