For a drug, the price is reduced by 10% for the first time and 20% for the second time. What is the current price of the drug compared to the original price?
一种药品，第一次降价10%，第二次降价20%，现在药品的价格是最初价格的多少
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<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">1 * (9/10) * (4/5)</gadget>
<output>18/25 = around 0.72</output>

<result>18/25 = around 0.72</result>