The school library has a total of 360 science and literature books, among which the ratio of science and literature books is 5:4. After purchasing some science and technology books, science and technology books account for 60% of the total. How many books and literature books are there altogether?
学校图书馆有科技书和文学书共360本，其中科技树与文学书的数量比是5：4，又购进一些科技书后，科技书占两种书总数的60%，现在图书馆有科技书和文学书一共多少本？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/9) / (2/5)</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">360 * (10/9)</gadget>
<output>400</output>

<result>400</result>