diff --git a/CalculatorApp.Console/Calculator.cs b/CalculatorApp.Console/Calculator.cs
index a143f74..74dcd17 100644
--- a/CalculatorApp.Console/Calculator.cs
+++ b/CalculatorApp.Console/Calculator.cs
@@ -1,8 +1,6 @@
 using System;
-using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Text;
-using System.Threading.Tasks;
 
 namespace CalculatorApp
 {
@@ -31,70 +29,22 @@ public int Multiply(int a, int b)
 
         public int Divide(int a, int b)
         {
+            if (b == 0)
+            {
+                throw new ArgumentException("Divisor cannot be zero.", nameof(b));
+            }
             return a / b;
         }
-
         public int Reminder(int a, int b)
         {
             return a % b;
         }
 
-        // Method with SQL injection vulnerability
-        public void ConnectToDatabase(string userInput)
-        {
-            string password = "xx123abc124";
-            string connectionString = $"Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password='{password}';";
-            
-            // Create a SQL query using the user input directly
-            string query = $"SELECT * FROM Users WHERE Username = '{userInput}'";
-            
-            using (SqlConnection connection = new SqlConnection(connectionString))
-            {
-                SqlCommand command = new SqlCommand(query, connection);
-                connection.Open();
-                
-                SqlDataReader reader = command.ExecuteReader();
-                while (reader.Read())
-                {
-                    Console.WriteLine($"User: {reader["Username"]}, Email: {reader["Email"]}");
-                }
-            }
-        }
-
-        // Method with hardcoded credentials
-        public void ConnectToDatabase()
-        {
-            string connectionString = "Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword;";
-            // Simulate database connection using the connection string
-            Console.WriteLine("Connecting to database with connection string: " + connectionString);
-        }
-
-        // Method with improper SSL verification
-        public async Task<string> GetInsecureDataAsync()
-        {
-            HttpClientHandler handler = new HttpClientHandler();
-            handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) => true; // Bypasses SSL verification
-
-            using (HttpClient insecureClient = new HttpClient(handler))
-            {
-                var response = await insecureClient.GetStringAsync("https://example.com");
-                return response;
-            }
-        }
-
-        // Method with inadequate input validation
-        public int ParseAndAdd(string a, string b)
-        {
-            // Potentially dangerous if inputs are not validated
-            int num1 = int.Parse(a);
-            int num2 = int.Parse(b);
-            return num1 + num2;
-        }
+    public async Task<HttpResponseMessage> GetGoogleAsync()
+    {
 
-        public async Task<HttpResponseMessage> GetGoogleAsync()
-        {
-            // Make the GET request
-            return await client.GetAsync("https://www.google.com");
-        }
+        // Make the GET request
+        return await client.GetAsync("https://www.google.com");
+    }
     }
 }