The school purchased 1600 books, science books accounted for (3/8), story books accounted for (3/10), how many other books are there?
学校购买了1600本图书，科技书占了(3/8)，故事书占了(3/10)，其他类图书有多少本？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/8) - (3/10)</gadget>
<output>13/40 = around 0.325</output>

<gadget id="calculator">1_600 * (13/40)</gadget>
<output>520</output>

<result>520</result>