Dongfeng Elementary School held a reading festival. The activity time was from February 16 to March 18, 2012. How many days did the reading festival hold?
东风小学举办读书节，活动时间从2012年2月16日到3月18日，读书节一共举办了多少天．
<gadget id="calculator">29 - 16</gadget>
<output>13</output>

<gadget id="calculator">13 + 1</gadget>
<output>14</output>

<gadget id="calculator">14 + 18</gadget>
<output>32</output>

<result>32</result>