i_mod_10 = i Mod 10
j = Switch(i_mod_10 <= 2, 2, i_mod_10 <= 5, 5, i_mod_10 <= _
    8, 8, True, 9)

1. What does this code do?
2. Can you reformat this code so it's easier to understand?
3. Can you think of an alternative approach that's also easy to understand?
4. Which version is better?