Mei Yangyang reads a book, she reads from page 3 to page 9, how many pages have she read in total?
美羊羊读一本书，她从第3页读到第9页，一共读了多少页．
<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>