num1=float(input("please enter the first number:  "))
operator = input("please enter the operator:  ")
num2=float(input("please enter the second number:  "))

if operator == "+":
   print(num1 + num2)
elif operator == "-":
   print(num1 - num2)
elif operator == "/":
   print(num1 / num2)
elif operator == "*":
   print(num1 * num2)
else:
   print("wrong operator please try again")