There are 216 students in the third grade of the experimental primary school, and the number of the fourth grade is more than that of the third grade (1/4). How many students are there in the fourth grade?
实验小学三年级有学生216人，四年级的人数比三年级多(1/4)，四年级有学生多少人？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">216 * (5/4)</gadget>
<output>270</output>

<result>270</result>