If the number of people in class A is 25% less than the number of people in class B, how much more people in class B than in class A
甲班人数比乙班人数少25%，那么乙班人数比甲班人数多多少
<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">(1/4) / (3/4)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>