Added division functionality and one test for it

src/main/py/primitive_calculations.py

@@ -8,3 +8,7 @@ def subract(first_number, second_number):
 
 def multiply(first_number, second_number):
     return first_number * second_number
+
+
+def divide(first_number, second_number):
+    return first_number / second_number

src/test/py/test_primitive_calculations.py

@@ -33,6 +33,9 @@ class primitive_calculations(unittest.TestCase):
     def test_multiply_minus_5_multiply_minus_5_equals_25(self):
         self.assertEqual(multiply(-5, -5), 25)
 
+    def test_divide_10_by_2_equals_5(self):
+        self.assertEqual(divide(10, 2), 5)
+
 
 if __name__ == "__main__":
     unittest.main()