The school library has 2,000 science and technology books, and the number of story books is 50 less than that of science and technology books (5/8). The number of story books is equivalent to 12.5% of all books in the school library. The school library has a total of books How many volumes?
学校图书馆有科技书2000册，故事书的册数比科技书的(5/8)还少50册，故事书的册数又相当于学校图书馆全部书的12.5%，学校图书馆共有图书多少册？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">2_000 * (5/8)</gadget>
<output>1_250</output>

<gadget id="calculator">1_250 - 50</gadget>
<output>1_200</output>

<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">1_200 / 0.125</gadget>
<output>9_600</output>

<result>9_600</result>