Cómo Hacer Una Calculadora con Html

def add(a, b):
  return a + b

def subtract(a, b):
  return a - b

def multiply(a, b):
  return a * b

def divide(a, b):
  return a / b

print("Please select operation -\n" \
        "1. Add\n" \
        "2. Subtract\n" \
        "3. Multiply\n" \
        "4. Divide\n")
  
select = input("Select operations form 1, 2, 3, 4 :")
  
number_1 = int(input("Enter first number: "))
number_2 = int(input("Enter second number: "))
  
if select == '1':
    print(number_1, "+", number_2, "=",
                    add(number_1, number_2))
      
elif select == '2':
    print(number_1, "-", number_2, "=",
                    subtract(number_1, number_2))
      
elif select == '