The school library has two floors. The administrator takes 15 books from the upper floor and puts them in the lower floor. At this time, the number of books in the lower floor is exactly (5/7) the number of books in the upper floor. It is known that there are 95 original books in the lower floor. Find the original book in the upper floor. Are there books that are more basic than the original books on the lower level?
学校图书馆有上下两层，管理员从上层取15本书放入下层，这时下层图书的数量正好是上层图书数量的(5/7)，已知下层原有图书95本，求上层原有图书比下层原有图书多基本？
<gadget id="calculator">95 + 15</gadget>
<output>110</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">110 / (5/7)</gadget>
<output>154</output>

<gadget id="calculator">15 - 95</gadget>
<output>-80</output>

<gadget id="calculator">154 + (-80)</gadget>
<output>74</output>

<result>74</result>