Yucai Primary School officially closed for summer vacation on July 5, and started school on August 28. How many days are there in total?
育才小学7月5日正式放暑假，8月28日开学，一共放假多少天？
<gadget id="calculator">31 - 4</gadget>
<output>27</output>

<gadget id="calculator">27 + 27</gadget>
<output>54</output>

<result>54</result>