# BOT Presentation Shopping
print("Hi, I am Marvin, your personal bot.")

#input to ask which opetarion you want to do
command = input("How can I help? ")

# if operation is add else substract
if command == "add":
    print("lets add some numbers")
    input1 = int(input("Number 1> "))
    input2 = int(input("Number 2> "))
    result = input1 + input2
    #operates with the input and print result
    print(input1," + " ,input2," = " ,result)
elif command == "subtract":
    print("lets subtract some numbers")
    input1 = int(input("Number 1> "))
    input2 = int(input("Number 2> "))
    #operates with the input and print result
    result = input1 - input2
    print(input1," - " ,input2," = " ,result)
elif command == "multiply":
    print("lets subtract some numbers")
    input1 = int(input("Number 1> "))
    input2 = int(input("Number 2> "))
    #operates with the input and print result
    result = input1 * input2
    print(input1," * " ,input2," = " ,result)
elif command == "divide":
    print("lets subtract some numbers")
    input1 = int(input("Number 1> "))
    input2 = int(input("Number 2> "))
    #operates with the input and print result
    result = input1 / input2
    print(input1," / " ,input2," = " ,result)
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=="discount":
  how_many = int(input("Which is the price > "))
  discount = int(input("Which is the discount > "))
  print ("The discount is ",discount/100*how_many," and the final prices is", how_many*(1-discount/100))
elif command=="meal":
  print("Let's calculate the cost of meal")
  how_many = int(input("How many you are > "))
  discount = int(input("Which is the addition value > "))
  print ("The price per person is",discount/how_many )
else:
    print("sorry I dont understand")
    #print polite error message in case nothing matchs