There are 327 books on three bookshelves in the school library. If you take 60 books from the first shelf and put them in the second shelf, and then take 38 books from the second shelf and put them in the third shelf, then There are the same number of books on the three shelves, how many books are there on the second shelf?
学校图书馆三个书架上有327本书，如果从第一个书架拿出60本书放入第二个书架，再从第二个书架拿出38本书放入第三个书架，这时三个书架的书一样多，原来第二个书架有多少本书？
<gadget id="calculator">327 / 3</gadget>
<output>109</output>

<gadget id="calculator">38 - 60</gadget>
<output>-22</output>

<gadget id="calculator">109 + (-22)</gadget>
<output>87</output>

<result>87</result>