There are 72 storybooks in the school, among them (2/9) are allocated to the third grade, how many books are allocated to the third grade?
学校有72本故事书，把其中的(2/9)分给三年级，三年级分得多少本？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">72 * (2/9)</gadget>
<output>16</output>

<result>16</result>