diff --git a/src/planetsmath/functions.py b/src/planetsmath/functions.py
index 4a8961f..aaea5f6 100644
--- a/src/planetsmath/functions.py
+++ b/src/planetsmath/functions.py
@@ -36,9 +36,10 @@ def multiply_by_2(list):
     for item in list:
         product *= 2
     return product
-    
+
+
 def division_function(list):
     division = 1.0
     for item in list:
-        division/=item
+        division /= item
     return division