The number of boys accounts for 62% of the whole class, and how many girls account for the whole class
男生人数占全班人数的62%，女生占全班人数的多少
<gadget id="calculator">62 / 100</gadget>
<output>31/50 = around 0.62</output>

<gadget id="calculator">1 - (31/50)</gadget>
<output>19/50 = around 0.38</output>

<result>19/50 = around 0.38</result>