Xiaohong reads a book and reads 39 pages, and the remaining pages are 7 more than the whole book (5/7). How many pages does this book have?
小红看一本书，看了39页，剩下的比全书的(5/7)多7页，问这本书有多少页？
<gadget id="calculator">39 + 7</gadget>
<output>46</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">46 / (2/7)</gadget>
<output>161</output>

<result>161</result>