The original price of a children's top is 120 yuan, how much is the price after the 20% discount?
一件儿童上衣原价120元，打八折后的价钱是多少？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">120 * (4/5)</gadget>
<output>96</output>

<result>96</result>