There are 28 boys and 26 girls in our class. "Three good students" account for 2/9 of the total number of students in the class. How many "three good students" are there in this class?
我们班有男生28人，女生26人，"三好学生"占全班总人数的(2/9)，这个班"三好学生"有多少人？
<gadget id="calculator">28 + 26</gadget>
<output>54</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">54 * (2/9)</gadget>
<output>12</output>

<result>12</result>