The original price of a washing machine is 1200 yuan, so how much is the price after a 20% discount?
一台洗衣机，原价1200元，那么打了八折后售价为多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_200 * (4/5)</gadget>
<output>960</output>

<result>960</result>