There are 25 boys in a class and 22 girls, how many boys account for the whole class
某班男生有25人，女生有22人，男生人数占全班人数的多少
<gadget id="calculator">25 + 22</gadget>
<output>47</output>

<gadget id="calculator">25 / 47</gadget>
<output>25/47 = around 0.531915</output>

<result>25/47 = around 0.531915</result>