diff --git a/Plugins/Flow.Launcher.Plugin.Calculator/Main.cs b/Plugins/Flow.Launcher.Plugin.Calculator/Main.cs
index 7de4d30fef5..ea278b49bfe 100644
--- a/Plugins/Flow.Launcher.Plugin.Calculator/Main.cs
+++ b/Plugins/Flow.Launcher.Plugin.Calculator/Main.cs
@@ -6,7 +6,6 @@
 using System.Windows;
 using System.Windows.Controls;
 using Mages.Core;
-using Flow.Launcher.Infrastructure.Storage;
 using Flow.Launcher.Plugin.Caculator.ViewModels;
 using Flow.Launcher.Plugin.Caculator.Views;
 
@@ -25,6 +24,9 @@ public class Main : IPlugin, IPluginI18n, ISettingProvider
                         @")+$", RegexOptions.Compiled);
         private static readonly Regex RegBrackets = new Regex(@"[\(\)\[\]]", RegexOptions.Compiled);
         private static Engine MagesEngine;
+        private const string comma = ",";
+        private const string dot = ".";
+
         private PluginInitContext Context { get; set; }
 
         private static Settings _settings;
@@ -35,7 +37,7 @@ public void Init(PluginInitContext context)
             Context = context;
             _settings = context.API.LoadSettingJsonStorage<Settings>();
             _viewModel = new SettingsViewModel(_settings);
-            
+
             MagesEngine = new Engine(new Configuration
             {
                 Scope = new Dictionary<string, object>
@@ -54,7 +56,19 @@ public List<Result> Query(Query query)
 
             try
             {
-                var expression = query.Search.Replace(",", ".");
+                string expression;
+
+                switch (_settings.DecimalSeparator)
+                {
+                    case DecimalSeparator.Comma:
+                    case DecimalSeparator.UseSystemLocale when CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator == ",":
+                        expression = query.Search.Replace(",", ".");
+                        break;
+                    default:
+                        expression = query.Search;
+                        break;
+                }
+
                 var result = MagesEngine.Interpret(expression);
 
                 if (result?.ToString() == "NaN")
@@ -76,6 +90,7 @@ public List<Result> Query(Query query)
                             IcoPath = "Images/calculator.png",
                             Score = 300,
                             SubTitle = Context.API.GetTranslation("flowlauncher_plugin_calculator_copy_number_to_clipboard"),
+                            CopyText = newResult,
                             Action = c =>
                             {
                                 try
@@ -119,6 +134,10 @@ private bool CanCalculate(Query query)
                 return false;
             }
 
+            if ((query.Search.Contains(dot) && GetDecimalSeparator() != dot) ||
+                (query.Search.Contains(comma) && GetDecimalSeparator() != comma))
+                return false;
+
             return true;
         }
 
@@ -142,8 +161,8 @@ private string GetDecimalSeparator()
             switch (_settings.DecimalSeparator)
             {
                 case DecimalSeparator.UseSystemLocale: return systemDecimalSeperator;
-                case DecimalSeparator.Dot: return ".";
-                case DecimalSeparator.Comma: return ",";
+                case DecimalSeparator.Dot: return dot;
+                case DecimalSeparator.Comma: return comma;
                 default: return systemDecimalSeperator;
             }
         }
diff --git a/Plugins/Flow.Launcher.Plugin.Calculator/Settings.cs b/Plugins/Flow.Launcher.Plugin.Calculator/Settings.cs
index 10cee364b08..61551487381 100644
--- a/Plugins/Flow.Launcher.Plugin.Calculator/Settings.cs
+++ b/Plugins/Flow.Launcher.Plugin.Calculator/Settings.cs
@@ -1,9 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
+
 namespace Flow.Launcher.Plugin.Caculator
 {
     public class Settings
diff --git a/Plugins/Flow.Launcher.Plugin.Calculator/plugin.json b/Plugins/Flow.Launcher.Plugin.Calculator/plugin.json
index 0b09218681f..771babb90fe 100644
--- a/Plugins/Flow.Launcher.Plugin.Calculator/plugin.json
+++ b/Plugins/Flow.Launcher.Plugin.Calculator/plugin.json
@@ -4,7 +4,7 @@
   "Name": "Calculator",
   "Description": "Provide mathematical calculations.(Try 5*3-2 in Flow Launcher)",
   "Author": "cxfksword",
-  "Version": "1.1.9",
+  "Version": "1.1.10",
   "Language": "csharp",
   "Website": "https://github.com/Flow-Launcher/Flow.Launcher",
   "ExecuteFileName": "Flow.Launcher.Plugin.Caculator.dll",