The school will have summer vacation on July 6th and start school on September 1st. How long is this vacation?
学校7月6日放暑假，到9月1日开学，这个假期一共是几天？
<gadget id="calculator">31 - 6</gadget>
<output>25</output>

<gadget id="calculator">25 + 1</gadget>
<output>26</output>

<gadget id="calculator">26 + 31</gadget>
<output>57</output>

<result>57</result>