The fair started from April 22nd to September 9th, how many days did the fair last?
展销会从4月22日开始至9月9日结束，一共展销了多少天．
<gadget id="calculator">30 - 22</gadget>
<output>8</output>

<gadget id="calculator">31 * 3</gadget>
<output>93</output>

<gadget id="calculator">8 + 1 + 8 + 1 + 93 + 30</gadget>
<output>141</output>

<result>141</result>