It is hoped that there are 160 students in the fourth grade of the primary school, which is the number of fifth graders (8/9). How many students are there in the fifth grade?
希望小学四年级有学生160人，是五年级人数的(8/9)，五年级有学生多少人？
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">160 / (8/9)</gadget>
<output>180</output>

<result>180</result>