There are 95 books on the bookshelf, and after Xiaolin took some, there are still 68 books on the bookshelf. How many copies did you take?
书架上有95本书，小林拿走一些后，书架上还有68本．拿走了多少本？
<gadget id="calculator">95 - 68</gadget>
<output>27</output>

<result>27</result>