This article describes how to extend the default calculation engine by implementing a custom calculation engine using the Aspose.Cells library. By loading an existing Excel file or creating a new one, we can use the methods provided by Aspose.Cells to implement a custom calculation engine and get the results. Finally, we save the modified Excel file to disk....function without writing it in a worksheet AI Document Assistant Close...function without writing it in a worksheet Analyzing your prompt, please...