The school has a winter vacation on January 17, 2014, and starts on February 11. How many days are there in total for the winter vacation?
学校在2014年1月17日放寒假，2月11日开学，寒假一共多少天．
<gadget id="calculator">31 - 17</gadget>
<output>14</output>

<gadget id="calculator">14 + 1 + 11</gadget>
<output>26</output>

<result>26</result>