faulty calculator using python

 #faulty calculator ...... * / +

print("Enter First Number")

first_nu = int(input())

print("Enter Second Number")

second_nu = int(input())

print("Enter Operator")

operator = input()

if(operator == '+'):

        print(first_nu - second_nu)

elif(operator == '/'):

        print(first_nu + second_nu)

elif(operator == '*'):

        print(first_nu / second_nu)

else:

        print(first_nu - second_nu)