A book has read 28 pages, accounting for 1/4 of the total number of pages. How many pages does this book have?
一本书看了28页，占全部页码的(1/4)，这本书共有多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">28 / (1/4)</gadget>
<output>112</output>

<result>112</result>