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+#!/usr/bin/python
+# coding=utf-8
+
+"""Below are a few sums demonstrating Python's arithmetic operators.
+
+You must extend the code to also print the total (sum) and average (mean) of
+the 5 results.
+
+Extension: Calculate the average as a floating-point number, rather than as an
+integer. You will find the float() function useful, which is similar to the
+int() function used before.
+"""
+add = 1 + 2 + 3
+subtract = 10 - 9 - 8
+multiply = 4 * 5 * 6
+divide = 8 / 4
+exponentiate = 2 ** 5
+
+print('Sums: %i,%i,%i,%i,%i' % (add, subtract, multiply, divide, exponentiate))