For the first time, a commodity is 20% lower than the original price. The second time the price was reduced by 15%, how much is the current price lower than the original price?
一种商品，第一次比原价降低了20%．第二次又降价15%，现价比原价降低了多少
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">(4/5) * (17/20)</gadget>
<output>17/25 = around 0.68</output>

<gadget id="calculator">1 - (17/25)</gadget>
<output>8/25 = around 0.32</output>

<result>8/25 = around 0.32</result>