Xiaoli was born on February 29, 1996. How many birthdays did Xiaoli have until February 29, 2008?
小丽是1996年2月29日出生的，到2008年2月29日，小丽过多少个生日．
<gadget id="calculator">2_008 - 1_996</gadget>
<output>12</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>