16 classes for Miller (March, April, May, June, July, and August)

January – 4 missed classes
February – 2 missed classes

March – 4 classes taken
April – 3 classes taken
May – 2 classes taken
June – 5 classes taken
July – 4 classes scheduled
August – 4 classes scheduled
22 classes total minus 6 missed classes in January and February =
16 classes invoiced.