There are 450 students in the sixth grade of Chengdong Primary School, accounting for 2/9 of the whole school. How many students are there in the whole school? What is the column
城东小学六年级有学生450人，占全校人数的(2/9)，全校有学生多少人？列式为多少
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">450 / (2/9)</gadget>
<output>2_025</output>

<result>2_025</result>