The original price of a piece of clothing is 1,000 yuan. Aunt Wang has a VIP card, and on top of the 10 percent discount, she gets another 10 percent discount. How much does Aunt Wang charge for this piece of clothing?
一件衣服原价是1000元，王阿姨有贵宾卡，在打九折的基础上再打九折，王阿姨买这件衣服要多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1_000 * (9/10) * (9/10)</gadget>
<output>810</output>

<result>810</result>