There are 300 sixth-grade students in a school, and 210 students are participating in the extended course. How many students are needed to make the number of people participating in the extended course reach 88%?
某学校六年级学生有300人，参加拓展课学习的学生有210人，要使参加拓展课学习的人数达到88%，还需要多少学生参加？
<gadget id="calculator">88 / 100</gadget>
<output>22/25 = around 0.88</output>

<gadget id="calculator">300 * (22/25)</gadget>
<output>264</output>

<gadget id="calculator">264 - 210</gadget>
<output>54</output>

<result>54</result>