I have comple guide step by step to create a simple calculator using python script. # define functions for each operation 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):    return x / y # take input from the user print("Select operation:") print("1. Add") print("2. Subtract") print("3. Multiply") print("4. Divide") choice = input("Enter choice(1/2/3/4): ") num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: ")) if choice == '1':    print(num1,"+",num2,"=", add(num1,num2)) elif choice == '2':    print(num1,"-",num2,"=", subtract(num1,num2)) elif choice == '3':    print(num1,"*",num2,"=", multiply(num1,num2)) elif choice == '4':    print(num1,"/",num2,"=", divide(num1,num2)) else:    print(&quo