If A and B are two inversely proportional quantities, when A increases by 50%, how much will B decrease
如果甲、乙是两个成反比例的量，当甲增加50%时，乙一定会减少多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

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