Xiaohong was born on February 29, 1992. How many birthdays did she have until February 29, 2008?
小红是1992年2月29日出生的，到2008年的2月29日她一共过了多少个生日．
<gadget id="calculator">2_008 - 1_992</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>