The price of a commodity is reduced by 20% for the first time, and the price is reduced by 30% for the second time. How much is the price of this commodity lower than the original price?
一种商品，第一次降价20%，第二次又降价30%，现在这种商品的价格比原价降低了多少
<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">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 * (4/5) * (7/10)</gadget>
<output>14/25 = around 0.56</output>

<gadget id="calculator">1 - (14/25)</gadget>
<output>11/25 = around 0.44</output>

<gadget id="calculator">(11/25) / 1</gadget>
<output>11/25 = around 0.44</output>

<result>11/25 = around 0.44</result>