Multiplies all the numbers given as arguments.
This method doesn't have any parameters.
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
oWorksheet.GetRange("A1").SetValue(oFunction.PRODUCT(65, 34, 165, 6, 9, 54));
builder.SaveFile("xlsx", "PRODUCT.xlsx");
builder.CloseFile();