A book, Xiaoxiao has read 45%, the number of unread pages is 17 more than the number of read pages, how many pages are there in the whole book?
一本书，笑笑已读45%，未读的页数比已读的页数多17页，全书有多少页？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20) - (9/20)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">17 / (1/10)</gadget>
<output>170</output>

<result>170</result>