There are 45 students in Class 51, 28 of whom are girls. What percentage of the whole class are girls?
五1班有45名学生，其中女生有28名，女生占全班人数的几分之几？
<gadget id="calculator">28 / 45</gadget>
<output>28/45 = around 0.622222</output>

<result>28/45 = around 0.622222</result>