It is hoped that there are 120 students in the first grade of elementary school, which is less than the number of students in the second grade (1/4). How many students are there in the second grade?
希望小学一年级有学生120人，比二年级学生数少(1/4)，二年级有学生多少人？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 / (3/4)</gadget>
<output>160</output>

<result>160</result>