There are 62 students in the fifth grade of a certain school, which is twice the number of first grade students. How many students are there in first grade? (Solution of column equation)
某校五年级有学生62人，是一年级人数的2倍．一年级有学生多少人？(列方程解)
<gadget id="calculator">62 / 2</gadget>
<output>31</output>

<result>31</result>