diff --git a/unit_testing.py b/unit_testing.py
index 9536d85..8ad7ef6 100644
--- a/unit_testing.py
+++ b/unit_testing.py
@@ -22,6 +22,9 @@ def test_positives(self):
         self.assertEqual(w2n.word_to_num('two point three'), 2.3)
         self.assertEqual(w2n.word_to_num('two million twenty three thousand and forty nine point two three six nine'), 2023049.2369)
         self.assertEqual(w2n.word_to_num('one billion two million twenty three thousand and forty nine point two three six nine'), 1002023049.2369)
+        self.assertEqual(w2n.word_to_num('one billion two hundred seventy four million'), 1274000000)
+        self.assertEqual(w2n.word_to_num('one million eighty two thousand'), 1_082_000)
+        self.assertEqual(w2n.word_to_num('one million one hundred and eighty two thousand', 1182000))
         self.assertEqual(w2n.word_to_num('point one'), 0.1)
         self.assertEqual(w2n.word_to_num('point'), 0)
         self.assertEqual(w2n.word_to_num('point nineteen'), 0)