In a certain class, 16 students got excellent grades in a math test, 24 got good grades, 7 got passed, and 3 failed.
某班级在一次数学考试中得优秀的有16人，良好的24人，及格的7人，不及格的3人，得优秀的约占全班的多少
<gadget id="calculator">16 + 24 + 7 + 3</gadget>
<output>50</output>

<gadget id="calculator">16 / 50</gadget>
<output>8/25 = around 0.32</output>

<result>8/25 = around 0.32</result>