From June 23rd to August 4th, how many days have passed?
从6月23日到8月4日，经过了多少天．
<gadget id="calculator">30 - 23</gadget>
<output>7</output>

<gadget id="calculator">7 + 1 + 31 + 4</gadget>
<output>43</output>

<result>43</result>