(8/9) of the sixth grade students of Chaoyang Primary School participated in the interest activity group, among which there were 120 boys, accounting for (3/5) of the number of students participating in the interest activity group. How many students are there in the sixth grade?
朝阳小学六年级学生人数的(8/9)参加了兴趣活动小组，其中男生有120人，占参加兴趣活动小组人数的(3/5)．六年级共有学生多少人？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">120 / (3/5) / (8/9)</gadget>
<output>225</output>

<result>225</result>