diff --git a/modules/calc.py b/modules/calc.py
index baa4be0..0328d2c 100644
--- a/modules/calc.py
+++ b/modules/calc.py
@@ -22,7 +22,7 @@ subs = [
 ]
 
 r_google_calc = re.compile(r'calculator-40.gif.*? = (.*?)<')
-r_google_calc_exp = re.compile(r'calculator-40.gif.*? = (.*?)<sup>(.*?)<')
+r_google_calc_exp = re.compile(r'calculator-40.gif.*? = (.*?)<sup>(.*?)</sup></h2>')
 
 def c(phenny, input):
     """Google calculator."""
diff --git a/modules/test/test_calc.py b/modules/test/test_calc.py
index 13e4839..4a405be 100644
--- a/modules/test/test_calc.py
+++ b/modules/test/test_calc.py
@@ -36,3 +36,9 @@ class TestCalc(unittest.TestCase):
         c(self.phenny, input)
 
         self.phenny.reply.assert_called_once_with('Sorry, no result.')
+
+    def test_c_quirk(self):
+        input = Mock(group=lambda x: '24/50')
+        c(self.phenny, input)
+
+        self.phenny.say.assert_called_once_with('0.48')