Mr. Wang’s bookshelf is full of books, among which science and technology books account for (3/8), story books account for (1/9), tool books account for (5/12), and the rest are mathematics books, mathematics books account for ((( ))/(())).
王老师的书架了装满了书，其中科技类书占(3/8)，故事类书占(1/9)，工具类书占(5/12)，其余的是数学类书，数学用书占((())/(()))．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 - (3/8) - (1/9) - (5/12)</gadget>
<output>7/72 = around 0.097222</output>

<result>7/72 = around 0.097222</result>