A book, read (3/5), there are 38 pages left, how many pages does this book have?
一本书，看了(3/5)，还剩38页，这本书一共有多少页？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">38 / (2/5)</gadget>
<output>95</output>

<result>95</result>