Calculator in Vb console

Imports System

Module Program
    Sub Main(args As String())
        Console.Write("Enter First Number :")
        Dim FirstNumber As Double
        FirstNumber = Console.ReadLine()
        
        
        Console.Write("Enter Second Number : ")
        Dim SecondNumber As Double
        SecondNumber = Console.ReadLine()
        Dim Mathoperator As String
       
       
       Console.WriteLine("Enter The Operation  : 1 = Addition , 2 = Subtract , 3= Devide , 4 = Multiply")
        Mathoperator = Console.ReadLine()
       
       
       Dim Result As Double
        If Mathoperator = "1" Then
            Result = FirstNumber + SecondNumber
            Console.WriteLine("Result is =" & Result)
        ElseIf Mathoperator = "2" Then
            Result = FirstNumber - SecondNumber
            Console.WriteLine("Result is =" & Result)
        ElseIf Mathoperator = "3" Then
            Result = FirstNumber / SecondNumber
            Console.WriteLine("Result is =" & Result)
        ElseIf Mathoperator = "4" Then
            Result = FirstNumber * SecondNumber
            Console.WriteLine("Result is =" & Result)
        End If