You are permitted to give up to $13,000 each year to any individual
without acquiring gift tax liability. So, Barry and Mary each can gift $13,000
to anyone of their choosing. For eight recipients (3 children and 5
grandchildren), each can gift $104,000. Consequently, Barry and Mary can offer
$208,000 ($104,000 x 2) to their children and grandchildren in 2013.
x stands for the month 3 is the money that she is spending each month if you multiply those together you get the amount of money she has spent over x amount of months minus the 20 dollars on her gift card