There are 180 sixth grade students in a certain school, accounting for 20% of the total number of students in the school. The number of fifth grade students is less than the total number of the school (19/25). How many students are there in fifth grade?
某校六年级学生有180人，占全校人数的20%，五年级人数比全校总人数少(19/25)，五年级有学生多少人？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">180 / (1/5)</gadget>
<output>900</output>

<gadget id="calculator">19 / 25</gadget>
<output>19/25 = around 0.76</output>

<gadget id="calculator">1 - (19/25)</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">900 * (6/25)</gadget>
<output>216</output>

<result>216</result>