After the library was completed, the school invested 480,000 yuan in the purchase of books, which was more than planned (1/11). How much is the planned investment in the purchase of books?
图书馆建成后，学校投入了48万元购置图书，比计划多投入(1/11)，购置图书计划投入资金多少万元？
<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">1 + (1/11)</gadget>
<output>12/11 = around 1.090909</output>

<gadget id="calculator">48 / (12/11)</gadget>
<output>44</output>

<result>44</result>