The number of boys accounts for 51% of the whole class, and how many girls account for the whole class
男生人数占全班人数的51%，女生人数占全班人数的多少
<gadget id="calculator">51 / 100</gadget>
<output>51/100 = around 0.51</output>

<gadget id="calculator">1 - (51/100)</gadget>
<output>49/100 = around 0.49</output>

<result>49/100 = around 0.49</result>