The total of the numbers !

Select any month (of any year) on the calendar.

Drag the red square into such a position that it includes nine dates.

Select this number from the options below.
Options 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

What is the smallest number in the red square?

Now add up the numbers in the red square.

Drag away the sticky note at the top of the page ...

... to read my prediction.