There are 28 boys and 25 girls in Class 5 and 3, how many boys account for the whole class.
五3班有28位男生，25位女生，男生占全班人数的多少．
<gadget id="calculator">28 + 25</gadget>
<output>53</output>

<gadget id="calculator">28 / 53</gadget>
<output>28/53 = around 0.528302</output>

<result>28/53 = around 0.528302</result>