three-layer bookshelf holds a book in total. If (1/3) of the books on the second layer are moved to the first layer and (1/4) of the books on the third layer are moved to the second layer, the number of books on the third layer Equal, how many books are there on each shelf?
一个三层书架共放书a本，如果把第二层书的(1/3)搬到第一层，把第三层书的(1/4)搬到第二层，三层书的数量相等，每个书架上各有几本书？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>