There are 216 students in the sixth grade of Hope Primary School, and the number of students in the fourth grade is more than that in the sixth grade (2/9). How many students are there in the fourth and sixth grades?
希望小学六年级有学生216人，四年级的人数比六年级多(2/9)，四年级和六年级一共有多少人？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 + (2/9)</gadget>
<output>11/9 = around 1.222222</output>

<gadget id="calculator">216 * (11/9)</gadget>
<output>264</output>

<gadget id="calculator">264 + 216</gadget>
<output>480</output>

<result>480</result>