If there are 25% more boys than girls in a school, how much less girls than boys?
某校男生比女生多25%，那么女生比男生少多少．
<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">125 - 100</gadget>
<output>25</output>

<gadget id="calculator">25 / 125</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/5) * 1</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>