The current cost is 25% lower than the original cost, what is the current cost?
现在的成本比原来降低了25%，现在的成本是原来的多少
<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>

<result>3/4 = around 0.75</result>