# Futurelearn: Python 101 from RPi Foundation - Bot with selection
print("Hi, I am your personal 'bot' called Dave.")

command = input("How can I help you? ")

if command == "add" or command == "plus":
    print("Let's add some numbers")
    input_1 = input("Number 1> ")
    input_2 = input("Number 2> ")
    number_1 = int(input_1)
    number_2 = int(input_2)
    result = number_1 + number_2
    output = str(result)
    print(input_1 + " + " + input_2 + " = " + output)
elif command == "subtract" or command == "take away":
    print("Let's subtract some numbers")
    input_1 = input("Number 1> ")
    input_2 = input("Number 2> ")
    number_1 = int(input_1)
    number_2 = int(input_2)
    result = number_1 - number_2
    output = str(result)
    print(input_1 + " - " + input_2 + " = " + output)
elif command == "multiply" or command == "times":
    print("Let's multiply some numbers")
    input_1 = input("Number 1> ")
    input_2 = input("Number 2> ")
    number_1 = int(input_1)
    number_2 = int(input_2)
    result = number_1 * number_2
    output = str(result)
    print(input_1 + " * " + input_2 + " = " + output)
elif command == "divide":
    print("Let's divide some numbers")
    input_1 = input("Number 1> ")
    input_2 = input("Number 2> ")
    number_1 = int(input_1)
    number_2 = int(input_2)
    result = number_1 / number_2
    output = str(result)
    print(input_1 + " / " + input_2 + " = " + 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 == "meal":
    people = int(input("how many people ate a meal> "))
    total = 0
    
    for meal in range(people):
        cost = float(input("How much was meal " + str(meal+1) + "? "))
        total = total + cost
        
    print("Each person will need to pay " + str(round(total/people,2)) + " pounds\dollars each.")
else:
    print("sorry I dont understand")