diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index fc1589088e6..d915aacb9a6 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -884,6 +884,25 @@
     "unittest.main(argv = [''], verbosity = 2, exit = False)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "49f3544e",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import os\n",
+    "\n",
+    "def ensurePath(file):\n",
+    "    directory = os.path.dirname(file)\n",
+    "    if not os.path.exists(directory):\n",
+    "        os.makedirs(directory)\n",
+    "\n",
+    "def saveDataFrameAsExcelFile(dataFrame, file):\n",
+    "    ensurePath(file)\n",
+    "    dataFrame.to_excel(file)\n"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -897,7 +916,7 @@
     "    DataFrameNormalizer.normalize(dataFrame)\n",
     "    batchCodeTable = BatchCodeTableFactory.createBatchCodeTable(dataFrame, manufacturer = manufacturer, dose = '1')\n",
     "    display(batchCodeTable)\n",
-    "    batchCodeTable.to_excel(excelFile)"
+    "    saveDataFrameAsExcelFile(batchCodeTable, excelFile)"
    ]
   },
   {
@@ -916,7 +935,7 @@
    "outputs": [],
    "source": [
     "# https://www.howbadismybatch.com/moderna.html\n",
-    "saveBatchCodeTable(\"MODERNA\", \"results/moderna.xlsx\")"
+    "saveBatchCodeTable(\"MODERNA\", \"results/batchCodes/moderna.xlsx\")"
    ]
   },
   {
@@ -935,7 +954,7 @@
    "outputs": [],
    "source": [
     "# https://www.howbadismybatch.com/pfizer.html\n",
-    "saveBatchCodeTable(\"PFIZER\\BIONTECH\", \"results/pfizer.xlsx\")"
+    "saveBatchCodeTable(\"PFIZER\\BIONTECH\", \"results/batchCodes/pfizer.xlsx\")"
    ]
   },
   {
@@ -954,7 +973,7 @@
    "outputs": [],
    "source": [
     "# https://www.howbadismybatch.com/janssen.html\n",
-    "saveBatchCodeTable(\"JANSSEN\", \"results/janssen.xlsx\")"
+    "saveBatchCodeTable(\"JANSSEN\", \"results/batchCodes/janssen.xlsx\")"
    ]
   },
   {
@@ -978,7 +997,7 @@
     "    DataFrameNormalizer.normalize(dataFrame)\n",
     "    severeEffectsBatchCodeTable = BatchCodeTableFactory.createSevereEffectsBatchCodeTable(dataFrame, dose = '1')\n",
     "    display(severeEffectsBatchCodeTable)\n",
-    "    severeEffectsBatchCodeTable.to_excel(excelFile)"
+    "    saveDataFrameAsExcelFile(severeEffectsBatchCodeTable, excelFile)"
    ]
   },
   {
@@ -1039,7 +1058,7 @@
    "outputs": [],
    "source": [
     "doseByMonthTable = createDoseByMonthTable()\n",
-    "doseByMonthTable.to_excel('results/doseByMonthTable.xlsx')\n",
+    "saveDataFrameAsExcelFile(doseByMonthTable, 'results/firstsecond/doseByMonthTable.xlsx')\n",
     "doseByMonthTable"
    ]
   },
@@ -1088,25 +1107,10 @@
    "source": [
     "# FK-TODO: make filter on 'Total reports' a parameter in getInternationalLotTable() \n",
     "internationalLotTable = internationalLotTable[internationalLotTable['Total reports'] > 50]\n",
-    "internationalLotTable.to_excel('results/International_Deadly_Lots.xlsx')\n",
+    "saveDataFrameAsExcelFile(internationalLotTable, 'results/international/International_Deadly_Lots.xlsx')\n",
     "internationalLotTable"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "a35ede95",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# FK-TODO: jedes zu speichernde Ergebnis in passenden Order speichern\n",
-    "import os\n",
-    "\n",
-    "report_path = 'results/international/'\n",
-    "if not os.path.exists(report_path):\n",
-    "    os.makedirs(report_path)"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -1117,7 +1121,7 @@
     "for country in ['United Kingdom', 'France', 'Germany', 'Japan', 'Italy', 'Austria', 'Netherlands', 'Spain', 'Belgium', 'Sweden', 'Portugal', 'Australia']:\n",
     "    batchCodeTable = InternationalLotTableFactory.createBatchCodeTableByCountry(nonDomesticVaers, country)\n",
     "    batchCodeTable = batchCodeTable[batchCodeTable['Total reports'] > 50]\n",
-    "    batchCodeTable.to_excel(report_path + country + '.xlsx')\n",
+    "    saveDataFrameAsExcelFile(batchCodeTable, 'results/international/' + country + '.xlsx')\n",
     "    display(country + \":\", batchCodeTable)"
    ]
   }