Small corrections concerning the plural of millions, milliards, cents and vingts

tests/test_fr.py

@@ -79,7 +79,12 @@ TEST_CASES_CARDINAL = (
     (1000000, 'un million'),
     (1000001, 'un million un'),
     (4000000, 'quatre millions'),
+    (4000004, 'quatre millions quatre'),
+    (4300000, 'quatre millions trois cent mille'),
+    (80000000, 'quatre-vingts millions'),
+    (300000000, 'trois cents millions'),
     (10000000000000, 'dix billions'),
+    (10000000000010, 'dix billions dix'),
     (100000000000000, 'cent billions'),
     (1000000000000000000, 'un trillion'),
     (1000000000000000000000, 'un trilliard'),