first version

S8n.Components.Packages/Basics/Calculator.cs

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+using System.Text.Json;
+
+namespace S8n.Components.Basics;
+
+public class Calculator
+{
+    public object Calc(string @operator, object[] args)
+    {
+        if (args == null || args.Length < 2)
+        {
+            throw new ArgumentException("At least two arguments are required");
+        }
+
+        // Convert arguments to decimal for precision, handling JsonElement
+        var numbers = args.Select(a =>
+        {
+            if (a is JsonElement jsonElement)
+            {
+                return jsonElement.GetDecimal();
+            }
+            return Convert.ToDecimal(a);
+        }).ToArray();
+        decimal result = 0;
+
+        switch (@operator?.ToLower())
+        {
+            case "add":
+                result = numbers.Sum();
+                break;
+            case "subtract":
+                result = numbers[0];
+                for (int i = 1; i < numbers.Length; i++)
+                {
+                    result -= numbers[i];
+                }
+                break;
+            case "multiply":
+                result = numbers[0];
+                for (int i = 1; i < numbers.Length; i++)
+                {
+                    result *= numbers[i];
+                }
+                break;
+            case "divide":
+                result = numbers[0];
+                for (int i = 1; i < numbers.Length; i++)
+                {
+                    if (numbers[i] == 0)
+                    {
+                        throw new DivideByZeroException("Division by zero is not allowed");
+                    }
+                    result /= numbers[i];
+                }
+                break;
+            default:
+                throw new ArgumentException($"Unknown operator: {@operator}");
+        }
+
+        return new { Result = result };
+    }
+}

S8n.Components.Packages/S8n.Components.Packages.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>