The sum of the page numbers of the last two pages of a book is 367, how many pages does this book have.
一本书的最后两页的页码和是367，这本书有多少页．
<gadget id="calculator">367 - 1</gadget>
<output>366</output>

<gadget id="calculator">366 / 2</gadget>
<output>183</output>

<gadget id="calculator">183 + 1</gadget>
<output>184</output>

<result>184</result>