This is a test of commonsense. Complete the next sentence:

How to make a desk calendar
Cut a sheet of paper (8.5 by 11 inches) in half across its width.
Discard one half and position the paper on a flat surface in front of you so that its long sides form the top and bottom of the rectangle. This will be the template for the calendar pages.
Use a pencil and a ruler to draw two vertical lines. Make each line 5 inches long and 3/4 inch from the left and right sides of the paper respectively.