fix : sale out of Province

packages/core/lib/utils/num_utils.dart

@@ -1,7 +1,7 @@
 import 'package:intl/intl.dart';
 
 extension XNumExtension on num? {
-  String get toFormatted {
+  String get separatedByComma {
     final formatter = NumberFormat('#,###', 'fa_IR');
     return this == null ? '':formatter.format(this);
   }

packages/core/lib/utils/separator_input_formatter.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/services.dart';
+import 'package:intl/intl.dart';
+
+class SeparatorInputFormatter extends TextInputFormatter {
+  final NumberFormat _formatter;
+
+  SeparatorInputFormatter() : _formatter = NumberFormat('#,###');
+
+  @override
+  TextEditingValue formatEditUpdate(TextEditingValue oldValue, TextEditingValue newValue) {
+    if (newValue.text.isEmpty) {
+      return newValue;
+    }
+    String tmpText = newValue.text;
+    String cleanedText = tmpText.replaceAll(RegExp(r'\D'), '');
+    int? number = int.tryParse(cleanedText);
+    if (number == null) {
+      return oldValue;
+    }
+    String formattedText = _formatter.format(number);
+    int selectionIndex = formattedText.length;
+    return TextEditingValue(
+      text: formattedText,
+      selection: TextSelection.collapsed(offset: selectionIndex),
+    );
+  }
+}

packages/core/lib/utils/string_utils.dart

@@ -0,0 +1,11 @@
+import 'package:intl/intl.dart';
+
+extension XString on String {
+  get separatedByComma {
+    final formatter = NumberFormat('#,###');
+    return formatter.format(this);
+  }
+  get clearComma{
+    return replaceAll(RegExp(r'\D'), '');
+  }
+}