diff --git a/src/natural_row.ipynb b/src/natural_row.ipynb
index 4281658..f10fe00 100644
--- a/src/natural_row.ipynb
+++ b/src/natural_row.ipynb
@@ -132,7 +132,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print(\"Result: \", get_digit(int(input())))"
+    "print(\"Result: \", get_digit(eval(input())))"
    ]
   },
   {