There are 56 students in the class, boys are 25% less than girls, how many girls are there?
全班有56人，男生比女生少25%，女生有多少人．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 + (3/4)</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">56 / (7/4)</gadget>
<output>32</output>

<result>32</result>