diff --git a/lectures/chap5/lab/lf/lotto.ipynb b/lectures/chap5/lab/lf/lotto.ipynb
index 5ab7d249b04b02ec0d53a4c7172c5ba668882238..2a3e39caeb3f6de66c02d5f69d52a2ee96d21242 100644
--- a/lectures/chap5/lab/lf/lotto.ipynb
+++ b/lectures/chap5/lab/lf/lotto.ipynb
@@ -64,7 +64,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 3,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:21:03.176781Z",
@@ -107,7 +107,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:21:45.639510Z",
@@ -158,7 +158,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:25:33.636784Z",
@@ -243,7 +243,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:28:03.696473Z",
@@ -301,7 +301,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 7,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:30:20.037475Z",
@@ -358,7 +358,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:32:57.485045Z",
@@ -411,15 +411,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2019-07-03T10:33:24.728040Z",
      "start_time": "2019-07-03T10:33:24.722740Z"
     }
    },
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "-5\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Svar\n",
+    "won = 0\n",
+    "for i in range(10):\n",
+    "    won += main()\n",
+    "print(won)"
+   ]
   }
  ],
  "metadata": {