There are 48 students in Class 5 and 4, and 31 students who are good students. What percentage of the total number of students are good students?
五4班有学生48人，三好学生有31人，三好学生的人数占全班人数的几分之几？
<gadget id="calculator">31 / 48</gadget>
<output>31/48 = around 0.645833</output>

<result>31/48 = around 0.645833</result>