print("Hi, i am Nuras, your personal bot.")
command = input("How can i help you >")
if command == "add":
  print("Let's add some number")
  input1 = input("Number 1>")
  input2 = input("Number 2>")
  number1 = int(input1)
  number2 = int(input2)
  result = number1 + number2
  output = str(result)
  print(input1 + "+" + input2 + "=" + output)

elif command == "substract":
  print("Let's substract some number")
  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 dont understand")