The original price of a piece of clothing is 180 yuan. Now it is sold at a "10% discount". What is the current price?
一件衣服原价180元，现在按"九折"出售，现价为多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">180 * (9/10)</gadget>
<output>162</output>

<result>162</result>