The original price of a piece of clothing is 180 yuan. Now it is sold at a 20% discount. What is the current price?
一件衣服原价180元，现在打八折出售，现价多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">180 * (4/5)</gadget>
<output>144</output>

<result>144</result>