#Write micropython  to design calculator  having following operation  
#+ -* / by taking input from user 

def add(x, y):
    return x + y

def subtract(x, y):
    return x - y

def multiply(x, y):
    return x * y

def divide(x, y):
    if y == 0:
        return "Error! Division by zero."
    else:
        return x / y

while True:
    try:
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))
        operator = input("Enter operator (+, -, *, /): ")

        if operator == '+':
            result = add(num1, num2)
        elif operator == '-':
            result = subtract(num1, num2)
        elif operator == '*':
            result = multiply(num1, num2)
        elif operator == '/':
            result = divide(num1, num2)
        else:
            print("Invalid operator!")
            continue
        
        print("Result:", result)
    
    except ValueError:
        print("Please enter valid numbers!")