diff --git a/Examples/base_entity/Program.cs b/Examples/base_entity/Program.cs
index ba2af102c..5f98da9ed 100644
--- a/Examples/base_entity/Program.cs
+++ b/Examples/base_entity/Program.cs
@@ -619,6 +619,14 @@ static void Main(string[] args)
             BaseEntity.Initialization(fsql, () => _asyncUow.Value);
             #endregion
 
+            var sqlt001 = fsql.Select<User1>()
+                .Where(u => u.Id == Guid.Empty)
+                .ToSql(u => u.GroupId / (u.Sort * 60));
+
+            sqlt001 = fsql.Select<User1>()
+                .Where(u => u.Id == Guid.Empty)
+                .ToSql(u => u.GroupId - (u.Sort + 2));
+
             var enumToString = fsql.Select<JoinTest01>().First(s => new
             {
                 State = ((int)s.JoinTest01Enum2).ToString()
diff --git a/FreeSql/Internal/CommonExpression.cs b/FreeSql/Internal/CommonExpression.cs
index 385406315..e8cd97800 100644
--- a/FreeSql/Internal/CommonExpression.cs
+++ b/FreeSql/Internal/CommonExpression.cs
@@ -946,10 +946,11 @@ rightExp is UnaryExpression rightExpUexp &&
             if (right == "NULL") oper = oper == "=" ? " IS " : " IS NOT ";
             switch (oper)
             {
-                case "%": return _common.Mod(left, right, leftExp.Type, rightExp.Type);
+                case "*": return $"({left} {oper} {right})";
+                case "%": return $"({_common.Mod(left, right, leftExp.Type, rightExp.Type)})";
                 case "/":
-                    if (leftExp.Type.IsIntegerType() && rightExp.Type.IsIntegerType()) return _common.Div(left, right, leftExp.Type, rightExp.Type);
-                    break;
+                    if (leftExp.Type.IsIntegerType() && rightExp.Type.IsIntegerType()) return $"({_common.Div(left, right, leftExp.Type, rightExp.Type)})";
+                    return $"({left} {oper} {right})";
                 case "AND":
                 case "OR":
                     if (leftMapColumn != null) left = $"{left} = {formatSql(true, leftMapColumn.Attribute.MapType, null, null)}";